Best Space Outdoor Backpack Pack Pockets in 2026

DURABLE. Made with high quality material, ultra-light, tear and water resistant .The extra strength provided by double-layer bottom piece, enhanced by bar-tacks at major stress points makes it very convenient to carry more load on your journeys.

COMFORTABLE. Breathable mesh shoulder straps with plentiful sponge padding help relieve the stress from your shoulder. The length of the shoulder straps is adjustable. The chest strap with a whistle buckle help you lock your backpack in place.

MULTI COMPARTMENTS. One main zipped compartment including two separators help you further organize things. Two zipped front pockets are good for holding small accessories. Two side pockets are good for holding water bottles and umbrellas.

Larger zippered compartment is compatible with iPad Pro 11 3rd M1 5G 2021,compatible with ipad Air 4th 10.9 2020,compatible with iPad 10.2 2020 2019,compatible with iPad Pro 11 2020 2018,compatible with iPad Pro 10.5,compatible with iPad Air 3 10.5,compatible with iPad 9.7,compatible with iPad Air 2/1,compatible with iPad Mini 5/4/3/2;compatible with Surface Go 2/1;compatible with Sumsung Galaxy Tab A 8.0/9.7/10.1/10.5/ S2 8-9.7;compatible with Kindle Paperwhite 10th or other 6-11 inch tablets.

Dimensions: 15.3 x 7.5 x 3.5 inches (L x W x H). Smaller zippered one for phones, wallet or outdoor/travel sundries. 2 mesh bags in each side for water bottle or umbrella (up to largest diameter 2.5 inch). Multi-functional storage area, accessary compartment with functional pockets to keep your items.

Flexible satchel shoulder strap varied from 18 to maximum 36 inch can be adjusted loose or tight. Perfectly fit your body. Two ways of carrying: left or right. Relieve the pressure when you carry your bag for a long time. Can be used as messenger bag / shoulder bag / crossbody backpack / casual daypack / sling bag / chest bag/ working or business bag.

【Wet Pocket Design】100% waterproof wet pocket is designed in the back of this backpack. Take this outdoor backpack for swimming or hiking to avoid getting wet or stuck in the rain. Never worry about your phone, or purse getting wet, and separate your sweaty clothes, towels, or other personal things for outdoor activities.

【Multi-Compartment Design】 This foldable backpack has 40L storage space. Featuring one main zipped compartment, a second large zipped front pocket, one front zipped hidden pouch, one front zipper compartment, and 2 side pockets. One separator and one small zippered pocket in the main compartment to organize your essential items.

【Lightweight & Comfortable】Weighs 1lb. Unfold size: 18.9*12.9*9.4inch(L*W*H); Fold size: 9.4x8.7inch; A true space saver. Fold the backpack into its pocket for storage to avoid the overweight charge. Breathable widened s-type shoulder straps with plentiful sponge padding help relieve the stress from your shoulder. The adjustable chest strap with a whistle buckle helps you lock your backpack in place securely or help to put in the luggage.

【 Durable Material】The material of 50L hiking backpack is Waterproof Nylon, high quality SBS pull string zippers, good ventilation, no deformation, Super versatile and multi-functional. Large Bearing Capacity: (Maximum)50L. Size: 14.2 x 9.4 x 23.6 inches. Size: 14.2 x 9.4 x 23.6 inches.

【Many Pockets】The travel backpack is so large and roomy. One Large Front Zipper Pocket for quick access and one large deep main pocket as well as one SPECIAL ZIPPER POCKET for shoes or dirty clothes. There also comes with 1 bottom rain cover pocket INCLUDE RAIN COVER. 2 Hipbelt Pockets could accommodate cell phone/MP3 player and 2 Side Pockets for bottles or umbrella.

【Hydration Bladder Compartment】There is a compartment in the main pocket designed for putting Hydration Bladder, keeping you hydrated for a day. A great travel backpack for various sports activities, such as climbing, hiking, camping, backpacking, traveling,etc. Hydration Bladder is NOT INCLUDED.

【Comfortable&Durable Daypack 】The 35L backpack meets size requirements for most airlines, with enough room for a couple of days' trips. Breathable mesh shoulder straps with plentiful sponge padding help relieve the stress from your shoulder. Widened and thickened S-type shoulder straps and high elastic breathable back support for best ventilation and easing burden.

【Lightweight &Roomy】The lightweight backpack for women and men is very spacious 35L(19.7"*12.6"*8.7“), only weight 2.14lb. 2 Front zipped pockets for easy storage and organization; two sides expansible mesh for water bottle and umbrella. One main compartment is roomy enough for clothes and a laptop and is with a water bladder exit on top. (NOT INCLUDED Water Bladder) . This casual daypack is a must-have on any trip.

【Multifunctional&Adjustable Straps】The straps of the 35L hiking backpack can be used for tying up your pack or hanging a sleeping bag, mat, hammock, tripod, and other gears. Mesh side pockets, keep your stuff separate and organized. The convenient bag for hiking, traveling, trekking, climbing, and outdoors.

18L LARGE CAPACITY MULTI-COMPARTMENT STYLISH DESIGN: Seven pockets to meet your daily needs. The spacious main pocket can accommodate up to a 13-inch computer. Versatile features perfect carry-on bag for weekend traveling, hiking, cycling, amusement parks, outdoor recreation activities

INNOVATION UMBRELLA POUCH & WATER BOTTLE HOLDER: A zippered mesh net storage at the bottom for wet umbrella or wet towel. The side water bottle holder provides stable brace during outdoor sports. For the convenience, it features the hidden back pocket and shoulder strap pocket（Suitable for credit cards, money bills and phones smaller than 5.8 inches in size）

CHANGEABLE & ADJUSTABLE SHOULDER STRAP: It can flexible switch around right or left-handed , the adjustable strap range is around 25.9 - 46.5 inches / 66-118cm. Can be worn as a sling bag, chest bag, shoulder bag, crossbody bag

【Large travel backpack for women】 This backpack is made of durable waterproof polyester, good air permeability and heat dissipation with two padded shoulder straps, offers lightweight carrying and strength reinforcement, relieve shoulder pressure, and maintain cool when wearing for a long time. And it's hard, solid, and doesn't fade.

【Separate Shoe Compartment Design & Wet Bag】 Main pocket x 2, laptop compartment x 2 (suitable for 14 "tablet and 15.6" laptop respectively), The wet bag is made of high density water resistant material can help you to separate dry items and wet items, if you have wet clothes or towel, you can put it in the wet bag. A separate shoe compartment can help you carry and keep your shoes better in your travel bag.

【USB Charging Port】 With built-in charging port allows you to charge your phone anytime, anywhere

LARGE CAPACITY BACKPACK: This hiking backpack has 40L storage space, dimension is 21.3*13.8*9.1 inch. With multi-compartment design includes one main zipped compartment, one zipped front pockets and two side pockets, one separator and one small zippered pocket in the main compartment, there is more than 10 pockets can hold everything you need in travels, such as phone, pens, maps,bottles or umbrella etc. You can easily organize all your essential stuffs.

DURABLE MATERIAL: Our camping backpacks made of high quality tear and waterproof polyester fabrics with smooth metal zippers. Pack and shoulder strap stitching is not easy to tear even if it bears heavy items. All stress points are reinforced with bar tacking to increase its longevity.

BREATHABLE MESH PADDING: It is a ergonomically designed daypack. With ventilated mesh padding shoulder straps and backside. It is a perfect hiking backpack for outdoor sports.

❤ Water Resistant & DURABLE: FENGDONG camping backpack is made of extra thick, tear-resistant, water-resistant and anti-abrasion polyester fiber. (Can't be in the rain for long time)All stress points are reinforced with bar tacking to increase its longevity.

❤ Breathable Mesh Padding: Stylish DayPack with the ventilated mesh padding shoulder straps and backside, breathable system and lightweight design are the perfect hiking backpack for outdoor sports. Ergonomically designed provides body comfort even when pack is completely full. Keep it cool even in summer.

❤ Large Capacity & Multi Compartment Bookbag: College Backpack with 40L storage space(20.5inch x 13inch x 7.1inch), this backpack features with multi-compartment design includes one main zipped compartment, one zipped front pockets and two side pockets. One separator and one small zippered pocket in the main compartment are convenient enough to help you further organize things.Large capacity helps you easily organize all your essential items.

Practical Design: This mini hiking backpack for women has multi-pockets and compact and adjustable features. Made of high-quality, water-resistant, and tear-resistant polyester material. Durable SBS zipper. Breathable adjustable shoulder straps and reinforced stitching provide long-lasting performance.

Perfect Size: 10.5 x 5 x 15 inches (L x W x H), 10 liters large enough to accommodate the items you need during the journey. A hidden security pocket on the padded back can hold your passport. 2 side pockets fit a water bottle or folding umbrella. This outdoor backpack is suitable for short trips.

Multi-compartment Design: Features one main zipper pocket, second large zipper front pocket, one front open pocket, one back hidden pouch, and 2 side pockets. One tablet compartment in the main zipper pocket, second front pocket has more small pockets that perfectly fit tissue or phone.

Foldable & Lightweight-- Minimalist Designed. The ultra-lightweight shoulder bag. Save your space to fold into its built-in pouch as a Sandwich size. (Note: No extra pouch carry with). Easily pack it in your suitcase or purse.

Roomy 20L Capacity--Keep things organized. Unfold size : 16.5*11.8*6.3inch(L*W*H). Three zippered compartments. The main pocket is Large enough to hold the computer and clothes. Outer smaller pockets are great for quick access such as guide books and cameras. An inner zippered pocket is a perfect place for valuables such as cash, credit cards, and passport. Two large sides mesh pockets for water bottles or umbrella

Durable & Tear Resistant-- Made with high-quality water and tear abrasion-resistant water-resistant coated Nylon material with SBS zipper. Update version without zipper flap and no struggle to get stuck in the zipper. Reinforced more than 14 places with a Bar-tack process for extra strength

Water Resistant & DURABLE: Made of Water Resistant high-density polyester material. BOVIP camping backpack is made of extra thick, tear-resistant, water-resistant and anti-abrasion polyester fiber. All stress points are reinforced with bar tacking to increase its longevity.

Breathable Mesh Padding and Whistle : For passionate hikers or trekkers, it with the ventilated mesh padding shoulder straps and backside, breathable system and lightweight design are the perfect hiking backpack for outdoor sports. Ergonomically designed provides body comfort even when pack is completely full. Keep it cool even in summer.

Large Capacity & Multi Compartment Bookbag: Trekking Backpack with 40L storage space(23.6inch x 12.5inch x 8inch).It features with multi-compartment design includes one main zipped compartment, one zipped front pockets,mesh bag and two side pockets. The main compartment have dividers to support 15.6-inch laptop placement and small zippered pocket are convenient enough to help you further organize things.Large capacity helps you easily organize all your essential items.

Dimensions: 17x10.8x3.9 inch (LxWxH). Larger compartment is compatible with MacBook Air 13 inch 2023-2018 A2681 M2 A2337 M1 A2179 A1932;compatible with MacBook Pro 13 inch A2338 M2 M1 A2251 A2289 A2159 A1989 A1706 A1708 and most up to 13 inch laptops; Middle non-zipper one is compatible with iPad Pro 11 inch ,compatible with ipad Air 10.9 inch,compatible with iPad 10.2,compatible with iPad Pro 11 2020 2018 and other 6-11 inch tablets; Smaller one is for phone,wallet or other small accessories.

One mesh pouch in each side for water bottle or umbrella (up to largest diameter 2.5 inch). Multifunctional storage area, accessary compartment with functional pockets to keep items organized. Can be used as laptop bag / messenger bag / shoulder bag / crossbody backpack / casual daypack backpack / sling bag / chest bag / travel bag / working or business bag.

Flexible satchel shoulder strap varied from 18 to maximum 36 inch can be adjusted loose or tight. Perfectly fit your body. Two ways of carrying: left or right. Relieve the pressure when you carry your bag for a long time.

【Great travel backpack for women】 This backpack is made of durable waterproof polyester, good air permeability and heat dissipation with two padded shoulder straps, offers lightweight carrying and strength reinforcement, relieve shoulder pressure, and maintain cool when wearing for a long time. And it's hard, solid, and doesn't fade.

【Separate Shoe Compartment Design & Wet Bag】 Main pocket x 2, laptop compartment x 2 (suitable for 13 "tablet and 14" laptop respectively), The wet bag is made of high density water resistant material can help you to separate dry items and wet items, if you have wet clothes or towel, you can put it in the wet bag. A separate shoe compartment can help you carry and keep your shoes better in your travel bag.

【USB Charging Port】 With built-in charging port allows you to charge your phone anytime, anywhere

Dimension: 14.17 x 7.48 x 2.76 inches (L x W x H). Main compartment is compatible with iPad Mini 5 2019, compatible with iPad Mini 4/2, compatible with Kindle Paperwhite and other 6-9 inch tablet and e-reader. Other multifunctional pockets can store phones, wallet or outdoor/travel sundries. 2 side mesh pockets for water bottle or umbrella (up to largest diameter 2.5 inch). 1 hidden zippered pocket on the back is convenient for your precious items.

Flexible shoulder strap varied from 16 to maximum 39 inch can be adjusted loose or tight to fit your body. Two clip buckles on both left and right form 2 ways of carrying. Relieve the pressure when you carry your bag for a long time.

Small mini size, even suitable for children if without too much loaded. An earphone hole on the front pocket enables you to enjoy music easily.

Durable: This small hiking backpack is made of high-quality water-resistant and tear-resistant nylon material with durable abrasion-resistant SBS zipper, which is able to use for a long time

Convenient and Lightweight: This hiking daypack is easy to fold and fit into an ultra-compact pouch. It's convenient to pack in your suitcase, purse, or car as a travel backpack without taking up too much space. Unfold size: 8.27x6.30x13 inches, Ultralight weight: 4.59oz

Perfect Companion for Trips: This small daypack for men and women is the perfect companion when you are out. It's handy to hold tissue, cash, credit cards, water bottle, small umbrella and any travel gear you need

[ Large Capacity & Organized ] This travel backpack 40L ( 12.6*7.5*20.1 inch ) features with multi-compartment design includes one main zipped compartment, one zipped middle pocket, two zipped front pockets and two side pockets. There is a velcro to fix the water bag liner in the main bag and a water pipe hole on the top side of the backpack to assemble the water bag system. You can easily organize all your necessaries with this hiking backpack for men women.

[ Durable & Waterproof Material ] This lightweight backpack is made of high quality 210d tear proof and waterproof fabrics with smooth zippers. Pack and shoulder nylon strap is not easy to tear even if it bears heavy items. All stress points are reinforced with bar tacking to increase its longevity. We also give away a rain cover in the bottom pocket of the backpack. Regardless of the weather, just take this waterproof backpack for men women to ensure that all your items remain dry.

[ Ergonomic and Comfortable Design ] The ventilated mesh padding shoulder straps and backside, along with the breathable system and lightweight design, make this backpack comfortable to wear even during long hikes. Keep it cool even in summer. The perfect day hiking backpack for outdoor sports.

*Large capacity multi compartment backpack: outdoor backpack with 40 liters of storage space (20.5 inches x 13.5 inches x 7.5 inches). The backpack has a multi compartment design, including a main zipper compartment, a zipped front pocket, two front zipper pockets and two side zipper pockets. One of the 15.5-inch compartments is convenient enough to accommodate the main laptop. Large capacity helps you easily organize all your important items.

*Waterproof and durable: including waterproof materials. The Camping Backpack is made of super thick, tear resistant, waterproof and wear-resistant polyester fiber. All stress points are reinforced with joint reinforcement to prolong their service life

*Functionality and safety: the luggage belt allows the backpack to be installed on the luggage / trunk and slide through the vertical handle tube of the luggage for easy carrying. There is a hidden anti-theft pocket on the back to protect your valuables from thieves. Suitable for international air travel and one-day travel as a travel gift

【Water Resistant & More Durable】- SKYSPER hiking daypack is made of high-density 600D polyester and 210D nylon plaid fabric, which is lightweight, anti-tear, wear-resistant and water repellent. In addition, all load-bearing points and shoulder straps are reinforced with lap-knots to make this back pack long lasting.

【Large Capacity & Multi Compartments】- With a 35L capacity for 1-2 day hike or 3 day trip, our travel backpack features a multi-compartment design including one main roomy compartment with a interior sleeve for hydration bladder, one anti-theft classification compartment with multiple layers and key clip, one front pocket and 2 mesh side pockets; In addition, the front elastic rope is great for hanging wet clothes and towels.

【Comfortable & Ergonomic Carrying System】- The back panel and shoulder straps are thickly padded, combined with load lifters and large hipbelt support which can not only effectively reduce the fatigue of hiking, but also store a 7inch cell phone and feature a MOLLE expansion system. The detachable and adjustable sternum buckle is also designed as a safety distress whistle for emergency use.

Sturdy and Durable: The WEREWOLVES foldable backpack is made of high quality tear-resistant and waterproof nylon material, with SBS two-way metal zippers, and multiple reinforcements at the seams ensure that the backpack provides extra strength and long-lasting performance.

Keep things organized: This backpack has one main zipper pocket, three front zipper pockets and two side mesh pockets. The main pocket and the outermost pocket each have two additional compartments to further help you organize your items. The main pocket offers 35 liters of space, perfect for day trips or longer trips.

Lightweight and easy to store: The backpack weighs only 0.8 lbs when folded and only 9.8 x 8.6 x1 inches when folded. It does not take up space, and can be expanded to store more luggage at critical moments, avoiding excess baggage fees and reducing your travel pressure!

Large Capacity & Multi Compartment Bookbag: Outdoor Backpack with 40L storage space(20.5inch x 13inch x 7.1inch), this backpack features with multi-compartment design includes one main zipped compartment, one zipped front pockets and two side pockets. One separator and one small zippered pocket in the main compartment are convenient enough to help you further organize things.Large capacity helps you easily organize all your essential items.

Water Resistant & DURABLE: Waterproof Material included. SHENHU camping backpack is made of extra thick, tear-resistant, water-resistant and anti-abrasion polyester fiber. All stress points are reinforced with bar tacking to increase its longevity.

Breathable Mesh Padding: Stylish DayPack with Soft multi-panel ventilated padding makes maximum back air flow and support. Breathable and adjustable shoulder straps relieve the stress of shoulder are the perfect hiking backpack for outdoor sports. Ergonomically designed provides body comfort even when pack is completely full. Keep it cool even in summer.

【Hiking Backpack】-25L.This tactical backpack is made of 600D Polyester and includes a RAIN COVER. The buckle and zipper are all made of YKK, are a terrific companion for all your day-long or overnight hydration needs.

【Compact Design】- This biking backpack has a compartment and a variety of pockets, It provides ample room for your outdoor essentials including additional clothing, sports towel, maps, etc. The Rain cover can protect the backpack from getting wet by the rain.The molle system allows you to attach other gears to the pack.

【Hydration System】-The main compartment has a separate water bag compartment for the hydration bladder. It includes a top hole for passing a drinking tube through, suitable for a 2L bladder(WATER BLADDER IS NOT INCLUDED).

RFID Protection: Back hidden RFID signal blocking pocket, to protect your ID card, bank card, or phone from getting scanned and stolen. And protect your information security in public places.

Multifunctional Pocket: The size of the sling backpack is 7.5 x 4 x 15 inches (L x W x H), good enough to accommodate the items you need daily outdoors. A hidden security pocket on the padded back can hold your passport. 2 side pockets fit a water bottle or folding umbrella. The main compartment can hold all your travel essentials.

Reversible and Breathable Shoulder Strap: Designed with one right / left easily switchable and adjustable padded strap and breathable back pad for your comfort. The adjustable strap range is 25.9 - 46.5 inches / 66-118cm. The shoulder strap pouch can hold the phone screen size under 7 inches easily.

[Multipurpose Sling Bag] Compact design, Sling Bag of one strap over shoulder, perfect for flat things while outdoor sports (hiking, camping, climbing, cycling, walking, traveling), like the iPad mini, smart phone, wallet, passport, ID card, cash, map, USB cable, power bank, earphone etc.

[Multiple Storage Sling Bag] 1 x main zipper pocket (can hold 7.9 inch iPad mini 4), 1 x magnetic phone pocket, 2 x front zipper pockets, 1 x inner pocket.

[Small and Smart Chest Backpack] 1) Exterior dimensions: 14 x 8.5 x 1 inch (35.6 x 21.6 x 2.5cm) 2).Adjustable strap, 36 to 50inch (91cm to 127cm). Carry on right shoulder, sling bag on your left front, easy access for both hands. 3).Best quality SBS zippers and comfortable durable polyester fabric.

Durable: Made with high quality water and tear Resistant nylon material.

Convenient and Lightweight: It fits into an ultra-compact pouch. It is easy to fold up into small pocket, packing it in your suitcase, purse or car without taking up space, ultralight and handy.

Perfect Companion for Trips: This small daypack is the perfect companion when you are out. Perfect for day trips, travel, day hikes, school, camping and shopping

1．【Lightweight】 This nylon Ripstop Backpack, lightweight 0.54lbs and packable, but durable to hold more than 30lbs, perfect for outdoor sport, camping, hiking, daily pack, and short trip use, foldable to put into luggage or duffle bag

2. 【Wet and Dry separated】Roomy pockets to pack different goods, the special front compartment can separate the DRY and WET well, perfect item when swimming, kayaking, hiking, or doing sports, waterproof outside

3. 【Roomy pockets】This rainproof packable Backpack suitable for adults and teenagers, foldable and take away to any where, with bigger capacity inside, with all piping inside, two net pockets for bottle and umbrella packable

HIGH-QUALITY NYLON, sling backpack bag is made of high-quality Water Resistant nylon, which is strong, sturdy, water-resistant and anti-scratch. is not easy to break and tear providing a secure and comfortable using experiment.

MULTIPLE POCKETS, sling bag comes with multiple pockets a perfect size to hold your wallet, cash, phone, cards, passport, and any essentials in everyday life. Have hidden anti-theft pocket is safe for protecting your valuable items inside. No need to worry theft easily opening your bag when you are travelling or lining up.

ADJUSTABLE SHOULDER STRAP, The shoulder sling bag strap is long enough to adjust from 14 inch to 35.8 inch to fit petite to plus size.

Well Desiged- Compact bags for travel, sports, business or daily outing. Beautify styled for both men and women. Great small cross body daypack. Convenient packs for walking, hiking, running or riding. Easily hold your camera or other sport accessories. Can be also worn across chest. Easily switch from left to right shoulder.

Mutipurpose - 6 different pockets for different needs. Front zipper pocket with built-in sponge layer can effectively protect your phone. Shoulder strap with reflective strip, detachable and adjustable shoulder strap, anti-theft zipper pocket and hidden earphone hole. Suitable for office, outdoor, business and other occasions. It is one of the most practical essentials in our daily life.

Wear-resistant, Durable-This outer layer is made of waterproof nylon cloth, which is lightweight, more durable and easy to maintain. Sweatproof and water resistant in almost any weather condition during your outdoor sports, do not soak in the water and cannot resist heavy rain for a long time. It is good for alaska cruise essentials or backpacks for amusement parks.

🏃【Durable & Water Resistant】MOUNTAINTOP 35L Hiking Backpack is made of highly water-resistant 400D polyester fabric, with YKK zippers, which provides strength and long-lasting performance. What's more, included a rain cover in the bottom, ensure your items dry in light drizzle, while not in heavy rain.

🏃【Large Capacity 】The camping backpack for men women is very spacious, 20.1 x 12.6 x 7.1 inches, with a capacity of 35 liters, which applies to 15.6-inch laptop, lightweight for only about 0.99kg (2.18lbs) .

🏃【Multi-Compartment】: The hiking daypack has many pockets. 1 front pocket is easy access for you to put maps, notepads and more; 1 main compartment with a hydration bladder and tube, (Hydration Bladder is NOT INCLUDED). 2 side pockets and 1 belt pocket are convenient enough to help you further organize things and easy access.

❤【SPACIOUS WITH MULTIPLE POCKETS】: This 15L capacity hiking backpack has 5 zippered locations including 2 waist zipper pockets to accommodate a book, phone, keys, snacks, first aid kit, basic essentials needed for day hikes.This small hiking backpack has one open pocket in the center for a bike helmet and two mesh side pockets for mineral water. This water pack still has room for a light jacket after filling up a 3L hydration bladder. NOTE: Bladder is NOT included.

❤【INSULATED AND WELL PADDED】: With an insulated pocket inside, this water bag keeps water nice and cool for 2 to 3 hours even in the heat. With mesh padding for relieving fatigue & ventilation, this water backpack for hiking keeps your pack cool and your back dry.

❤【LIGHT WEIGHT & COMFORTABLE】:This hiking daypack is very light weight.The shoulder straps are well cushioned and distributes the weight evenly.Straps are fully adjustable for shoulders, chest and waist for comfortable fit and it is even suitable for an eight year old kid. The back portion that touches your back is a honeycomb texture, allowing your back to breathe despite having the backpack against your body.