Best Water Resistant Camping Sleeping Bags in 2026

SUPER WARM AND MOST COMFORTABLE! YOU WILL LOVE THIS SLEEPING BAG! Want to sleep comfortably, anywhere? No need to suffer with a cheap, cold, tight sleeping bag! This quality, portable bag is perfect. Super sturdy and extremely comfortable.

THIS SUPER SOFT, HUGE, WARM & COMFY SLEEPING BAG FEATURES A LIFETIME WARRANTY! – Economically and practically efficient; With an impressive size of 87" X 59" This sleeping bag sleeps two adults in ample and comfort.

FOR COLD CLIMATE CONDITIONS [32° Up] PERFECT FOR HIKING, CAMPING, TRAVELING & MORE! No tearing due to tight conditions, No shivering due to heat loss, very convenient to carry. You’ll wish you found this years ago, comes with 2 traveling pillows!

EXTRA-LARGE: 27.6" W x 16.5" H x 13.8" D - 100L storage capacity. Oversize and super large capacity to fit many items such as clothes, bedding, comforters, blankets, pillows, towels, quilts, holiday decorations, shoes, books, toys, sleeping bags, camping gear, laundry, throws, cushions, linens, purses, inflatable beds, backpacks, workout gear, and more.

MOVING BOX ALTERNATIVE: A lightweight, economical, and convenient alternative to traditional cardboard moving boxes or clear plastic storage bin containers. No need to buy boxes or look for packing supplies. Just unfold, unzip, and begin packing and loading. Folds flat into a small size when not in use for easy storage in your drawer, closet, cabinet, car, shelf, or luggage. Reusable for future use to help protect the environment. Easy to clean with wipes or damp clothes. Stackable when filled.

HEAVY-DUTY: Sturdy construction safely supports 50 lbs. Made of high-grade, water-resistant, thick polypropylene woven fabric material which is durable and built to last. Protects from moisture, humidity, dust, and dirt. Strong and long poly webbing carrying handles are reinforced for extra strength, security, and durability. Heavy-duty side handles make the bag easy to transport. A premium dual tab zipper goes around the bag allowing the top to open wide for easy loading and unloading.

USED FOR 3 SEASONS:Our Sleeping Bags can be used for 3 seasons.They are designed for 10~20 Degrees Celsius. Moreover, these bags also have a weather-resistant design to keep you warm even in extreme conditions and prevent you from any dampness - this is achieved through double-filled technology.our sleeping bags are designed to ensure that after a tiring day of trekking, hiking, travel or any other exploration you can get a good and relaxing night’s sleep.

DESIGN: Separated zipper at the bottom can also make your feet often come out through the wind. Half-circle hood with adjustable drawstring keeps your head warmer even in extreme conditions.Our sleeping bags are designed to provide much needed rest after a full day of outdoor activities.

MATERIAL:Outer Cover Material-premium 210T Anti-tearing Polyester Fabric which is waterproof and Breathable; Lining Material:190T polyester pongee

EXTRA-LARGE: 25.6" L X 25.6" H X 8.7" D - 25 Gallon volume. Super large capacity and spacious tote bag can store many items such as Christmas wreaths, cushions, camping gear, stuffed animals, party supplies, home décor, holiday decorations, tires, wheels, sports equipment, strollers, frames, sleeping bags, foldable bicycles, bedding, pillows, clothes, comforters, toys, blankets, sheets, linens, towels, quilts, shoes, purses, laundry, and more.

SEE-THROUGH DESIGN: Clear, transparent design lets you easily view stored contents for quick identification without needing to search or open the bag. Made of sustainable, water-resistant, high-grade, durable premium polypropylene woven fabric material that is built to last. Thick, tear-resistant, and puncture-resistant material keeps your items safe from moisture, dust, dirt, and humidity. A minimalist’s choice for storage solutions. Easy to clean with wipes.

HEAVY-DUTY & DURABLE: Stands upright and can safely hold up to 50 lbs. Heavy-duty handles are reinforced with 3 layers and cross-stitched to increase strength and load bearing capacity. The long, strong, and thick poly webbing carrying handles conveniently allow for easy carrying, ability to be hung on a wall, and easy pulling and sliding from under your bed. A sturdy, smooth, dual tab 3-sided premium zipper goes down the edges allowing the bag to open wide for easy loading and unpacking.

COMFORTABLE SLEEPING BAG: Soft lining; Half-circle mummy style hood keeps you warm and your pillow clean; Unzips at the top or bottom for easy access and ventilation; For camping in three seasons

STAY WARM IN COLD WEATHER: You’ll be warm and rested in this sleeping bag; Innovative fiber fill, double-layer construction and draft tubes work together to keep the warmth in

TOUGH, DURABLE SLEEPING BAG: Soft liner and rugged, water-resistant canvas shell will stand up to years of rigorous adventures

SUPER COMFORTABLE AND SO WARM: Agemore Waterproof Backpacking Flannel Cotton Double Sleeping Bag is perfect for backpacking, camping and biking. Lined on the inside with a super soft brushed flannel cotton and filled with a high level 3D synthetic fiber fill for optimum warmth insulation. Suitable for spring, summertime and fall camping. Measures 59in (W) x 86.6in (H); fits people up to 6ft tall. Similar to sleeping in your own bed at home.

LIGHTWEIGHT AND COMPACT: Specifically engineered to compress tightly for easy packing, but puffs up nicely when in use. Amazingly ultra-lightweight and provides superior warmth. Easy to fold and includes a travel-friendly compression sack with a drawstring and straps for powerful compression. Compresses down to 17x 11.5x 11.5inches, with weight being only 7 lbs.

USE AS ONE DOUBLE or TWO SINGLE BAGS: Can be used as a single extra-large sleeping bag for doubling up, or it can be split into two separate sleeping bags. Features zippers on both sides so that either person can easily get out of the sleeping bag without disturbing the other person. Can also be fully unzipped and laid flat, turning the sleeping bag into two separate large blankets.

FILL: 12oz/yd² Polyester Insulation, Temperature Rating 32-77 Degree Fahrenheit, warm and comfortable, insulates better when wet than down insulation while it makes sense to keep any sleeping bag dry as much as possible.

SEMI-RECTANGLE SHAPE: Pack remarkably small and provides a generous cut at the elbows and knees so side sleepers can shift positions comfortably throughout the night, you can choose your preferred size. Integrated stash pocket allows a watch or lip balm. Weight:4.2-6.9 pounds

WATERPROOF& WINDPROOF: 290T Nylon shell fabric is treated with a durable water-repellent (DWR) finish to shrug off moisture; Draft collar and a full-length draft tube provide tucked-in comfort and temperature regulation;Half-circle hood with adjustable drawstring keeps your head warmer even in extreme conditions.

✅ Lightweight And Easy To Carry: This Ultralight sleeping bag weighs only 2.9lbs including the carrying bag. Make the most of any hike with a backpacking sleeping bag that doesn't weigh you down on your trek. The Compression Carry Bag allows for convenient storage and comfortable packing.

✅ Comfortably Fits Kids And Adults Up To 5’11”: This sleeping bag is large enough for children and most men and women. The rectangular shape offers plenty of room around the shoulders while hugging the body for the perfect night's rest.

✅ Durable, Breathable And Skin Friendly: High-grade polyester is used for the shell and filling of this compact sleeping bag; it feels gentle and soft on your skin. Thoroughly-tested zippers on the top and bottom ensure that you get the same reliable experience on every trip.

Super Warm & Cozy: No more chattering under the cold, harsh winds! Stay warm and cozy even in cold night, this double sleeping bag is extremely comfortable and super warm.

Stands Against The Elemnts: Ohuhu double sleeping bags for adults is crafted with high quality water-resistant 210T polyester, lined with TC fabric and filled with hollow cotton that works together for cloud-like comfort.

Dual Usage: Acts as a giant double sleeping bag that fits two happy campers comfortably, and detachable via zippers to become two individual sleeping bags.

GREAT FOR ALL SEASONS - Rated temperature 5(℃)--25(℃), which allows sleeper warm even at 40(℉). Comfort temperature is 17(℃)--24(℃). This is achieved through double-filled technology. Perfect for backpacking, camping and hiking even using at home. Certainly the best sleeping bag for adventures

GET FANTASTIC FREEDOM WITH SPECIAL DESIGN - Measures 29.5 W x 86.6 H in Perfectly fits an average size adult, and tons of space for kids. Two-way zipper with “zipper guard” to prevent stuck hooks effectively. Separated zipper at the bottom can also make your feet often come out through the wind. Double zipper slider allow you to open the bottom of the sleeping bag at a warm night. You can even fully open the sleeping bag then use as a blanket.

ULTRA LIGHTWEIGHT AND EASY TO PACK - Can be packed down into an ultra compact bag in seconds. There’s no need to fold or roll it. Just stuff it into the sturdy carrying bag, pull the straps, and it folds down into a small, light THREE POUND package that will easily fit in any backpack.

COMFORTABLE, DURABLE, SKIN FRIENDLY– 100% polyester lining is skin-friendly & comfortable. High quality 290T polyester makes it durability. You will be comfortable no matter how hard and rough the ground is.

GREAT FOR ALL SEASONS – Keep you warm and safe even in near-freezing temperatures. waterproof, double-layer technology keep you warm in wet conditions and prevent you from getting damp.

SPECIL DESIGN– Single size: 33 by 86.6 inches (W x D), weight: around 4 pounds. Zip two together for one large size, which can be used for two persons. Couples and friends can relax and sleep sweetly after kinds of sports. Can be fully opened to be a blanket for picnic or play.

PLENTY OF ROOM. Comfortably fits most campers up to 5 FEET, 11 INCH tall. SEZE: 31.5 by 86.6 inches (W x D). Our sleeping bag can be used in 3 seasons with a design temperature of 50℉- 68℉(10℃-20℃). Recommended limit temperature: 41℉-77℉

GOOD QUALITY WITH AFFORDABLE PRICE. The stitching and material feels neat and comfotable. Outer Cover Material: 190T Nylon, Waterproof and Breathable Fabrics; Lining Material: Polyester Pongee; Fill-Material: hollow cotton. WARM AND SKIN-FRIENDLY

A THOUGHT OUT DESIGN. Drawstring allows you to tighten hood and KEEP YOU HEAD NICE AND WARM. The idea of having a zipper at the foot to allow more warm or cool air to enter or exit the bag in different times of the season

Highly durable, water-resistant fabric with zippered access and drawstring hood to keep out the elements and keep you dry

Bivvy design prevents condensation inside by allowing moisture out while keeping the rain out too

Made from quiet, tear-resistant material that won’t shred to pieces to keep you protected outdoors

✅ 𝐀𝐝𝐣𝐮𝐬𝐭𝐚𝐛𝐥𝐞 𝐙𝐢𝐩𝐩𝐞𝐫 𝐁𝐥𝐚𝐧𝐤𝐞𝐭: 7AM Enfant baby sleeping bag contains footmuffs in 3 sizes. These winter car seat covers for babies expands in length and width with its 2 length extensions and its 2 position center zipper. 7 AM Enfant warm stroller sleeping bag has a removable anti-slip center back panel that allows uninterrupted access to the five point safety straps.

✅ 𝐄𝐫𝐠𝐨𝐧𝐨𝐦𝐢𝐜 𝐇𝐨𝐨𝐝: This toddler winter sleeping bag possesses an ergonomic hood with a safe buttoned elastic adjuster that gives your baby a comfy and relaxing feel in milder temperatures. The dimensions of a warm stroller sleeping bag are: 0-3M - H: 13, W: 24", D: 1.5", 3-6M - H: 13.7", W: 26.7", D: 1.6".

✅ 𝐏𝐫𝐞𝐦𝐢𝐮𝐦 𝐈𝐧𝐬𝐮𝐥𝐚𝐭𝐢𝐨𝐧:This Blanket cum down sleeping bag for baby has a water resistant outer shell making it an ultra-soft infant camping sleeping bag with premium insulation and micro-fleece lining which is suitable for freezing conditions in temperature rating of -20° C/-4° F.

Material:The nylon on the outer surface is a high-quality waterproof and breathable material, and the inner surface is a layer of polyester soft cushion, which allows you to lie on a soft and comfortable cushion, the filling is Microfiber.

Large Size Sleeping Bag:XL Size sleeping bags for adults,more space than normal sleeping bags,the widening style camping bag is(86.6*31.6 inches), which is enough for adults or children to move freely and find the most comfortable sleeping position for themselves.

Applicable Season:Our sleeping bags can be used in multiple seasons,Microfiber cotton can give us enough warmth,Microfiber can make us have a good place to sleep anywhere, and the ventilation effect can keep us from being stuffy.

【Ultra Comfort & Durable】Outer material: Nylon (Waterproof and Durable), Lining:100% Polyester (Breathable and skin-friendly), Premium Polyester keeps the temperature from 55 to 60℉ and provides a ultra-comfort sleep environment to people.

【Professional Design】The sleeping bag is waterproof and weatherproof. And the smooth zip closure makes it more convenient. Our sleeping bag measures 83"L x 30"W, the size fits for most people. It can accommodate an adult or two children

【Compact & Lightweight Easy To Carry】Unlike down sleeping bags, Our envelope sleeping bag is easy to roll up into the carrying sack and it can be compressed down to just 11" in height and 1.7lbs in weight. It's ideal for backpacking enthusiasts

3 SEASON WARMTH AND COMFORT: The XL Prolite Sleeping Bag will keep you warm through spring, summer and fall. The XL Prolite features our patented ThermoCore synthetic insulation which will keep you warm from 40 - 60°F, keeping you warm even on the coldest fall and spring nights.

GENEROUS XL SIZING: At 88” x 34” The XL Prolite an extra large sleeping bag for adults and can comfortably fit anyone up to 6’6. The square foot design (rather than tapered mummy style) gives added foot and leg room so you can toss and turn to without feeling like you’re in a straight jacket!

THERMOCORE SYNTHETIC INSULATION: Our patented TheroCore insulation combines lightweight performance with excellent heat retention. ThermoCore uses advanced synthetic fill to retain more body heat.

DESIGN: The Zeros lightweight sleeping bag is one of the best sleeping bags for adults and kids on the market. This compact sleeping bag is a space saver that uses minimal storage on any hiking backpack, dry bag, emergency kit, and survival gear pack. This ultralight sleeping bag is optimal as a summer sleeping bag and works as an overnight sleeping bag in the Spring and Fall when traveling to warm weather places. Works well as a cold weather sleeping bag when paired with our sleeping bag liner

CONSTRUCTION: This light sleeping bag is made of soft, skin friendly materials, giving a comfortable night's sleep. Outer liner made of 380T nylon polyester, a strong lightweight water resistant textile ideal for your camping equipment. The filling is made of microfiber, a compact material that creates an ultralight sleeping bag but a very warm sleeping bag. Inner lining is made of soft pongee, a mixture of silk & cotton. Goes well with our hammock, cot, 2 & 4 person tent, fleece & sheet liners

DIMENSIONS: The FE Active sleeping bag is a single person sleeping sack. It is 74.8 inches long and 29.5 inches wide making it an ideal ultra lightweight sack for any average size adult , boys & girls.  Compact camping bag weighing in at just 1.54 pounds minimizing weight on your backpacking backpack. When you stuff it into its compression bag, the size can be reduced down to 12.2 by 5.9 inches. The Zeros can be unzipped into a big blanket to cover a full size bed. Ideally used with our liners

3 Season Sleeping Bag: Active Era's cold weather sleeping bag is perfect for Spring, Summer and Autumn seasons, as well as indoor use! A warm, 200GSM hollow fibre filling provides warmth in a temperature range above 50°F, and an extreme temperature limit of 27°F.

Durable Ultralight Sleeping Bag: Designed with a 190T polyester outer shell and sleeping bag liner, this adult sleeping bag is made with durable, tear-resistant materials so that you can be protected from the elements.

Ultra Comfort: Our sleeping bags are designed to maximise comfort with their cosy, warming 200GSM filling. This sleeping bag has multi-purpose use, it can be unzipped to full 75" x 30"size and used as a duvet/quilt to snuggle up in, or partially unzipped to allow greater ventilation as you sleep.

SNOOZE HAPPY - The unique wavy shape allows multiple sleep positions. Rotate the cover and elastic opening for maximum warmth and easy movement. The front zipper position allows the child to easily zip and unlock the bag. Your little one will have increased legroom and increased air circulation. Drifting off to sleep is a breeze when your child is snuggled up in this original sleeping bag.

SUPER SOFT - The exterior of AceCamp’s Sleeping Bag is made from durable 190T embossed soft polyester, making it breathable and waterproof. The interior is lined with 100% cotton flannel, making it soft and comfortable. Let your child or baby sleep peacefully all night.

TRAVEL-FRIENDLY DESIGN - Closed pocket for easy storage. Our travel kits are intelligently designed to take everything into a compact backpack including your sleeping bag. It's very simple. Let your kids enjoy doing their own packing! Your child can easily access his/her stuff without having to unfold the sleeping bag while in the backpack.

►ULTRALIGHT WEIGHT: Premium selected 800 fill power (IDFL tested) down fills the backpacking sleeping bag and holds the highest warmth to weight ratio of any insulation type. Our down and down processes have been updated and are outside certified, and significantly reduce down product odor. We wrap the down in a baffled (not sewn threw) ultralight 10 denier ripstop shell to complete the ultralight sleeping bag and prevent down loss!

►WARMER FEET: We know warm feet are critical for a good night’s sleep so we removed some down from underneath your back (where it is compressed and not adding warmth) and moved it to your feet, giving you warmer feet in this light sleeping bag without extra weight!

►PACK LESS: Not only does down have the highest weight to warmth ratio of any insulation, but it also is the most compressible insulation available! Easily compress your down sleeping bag to fit in any pack or space without needing to buy it separate! After purchase, we send you resources to help loft, compress, & store your down sleeping bag for backpacking correctly!

Multifunctional Kids Sleeping Bag- Original design, multiple functions. In addition, you also can stitch two sleeping bags together with a zipper forming an even larger blanket.

Glowing-in-The-Dark- Under direct Strong light, this sleeping bag glows in the dark; Under weak light, the stars will glow faintly. Children will love heading to bed with a bag that brings imagination to bedtime.

Adequate Sleeping Space- The unique sleeping bag allows for plenty of room for wiggly little ones. Our bags come in two sizes Kids and Youth. Our bags also have extra padding around the zipper to help keep cool night drafts away. The zippers are durable and easily zip and unzip.

0 Degree Sleeping Bag for Camping: Perfect cold weather sleeping bag features WR 650 fill power duck down insulation with a revolutionary microscopic ClusterLoft base to keep you warm from 0 - 30 F

Hiking Gear: Designed for thru-hiking, backpacking and camping, this ultralight sleeping bag boasts superior weight-to-warmth ratio at only 3.56 lbs for Long; Sleeping bag stuff sack included

Hydrophobic Water Repellent: DWR-Coated camping sleeping bags for adults feature 400T 20 D ripstop nylon fabric liner, 2 large YKK zippers with anti-snag sliders, velcro, drawstring & vertical baffles

WARMTH Fitted mummy shape and 10 degree thermal rating keeps you snug in colder temperatures with a 6.5 lb carry weight

DURABLE Ripstop fabric and hollow core fiber fill helps this sleeping bag withstand your most rugged adventures

HOLLOW CORE FIBER FILL This sleeping bag filling is more resilient, water resistant, better maintains thermal properties when wet, and is loftier and fluffier than standard solid core sleeping bag filing

【Big and Tall Sleeping Bag】KingCamp extra wide sleeping bag with a special cylindrical shape, it is longer and wider than regular sleeping bags, measuring 86.6x39.4in. This flannel sleeping bag is roomy so you can toss and turn in the sleeping bag with the zippers closed, as comfortable as a bed at home! This adult sleeping bag is very suitable for outdoor activities in summer, spring and autumn.

【Warm & Cozy】KingCamp sleeping bags for adults filling 350g/㎡ hollow fiber and 100% flannel lining offers excellent warmth and comfort throughout the night. Our camping sleeping bag adopts a new diagonal quilting design, which can better fix the cotton, lock the temperature of every inch of the warm sleeping bag to enhance the warmth of the bottom.

【Warm for 3 Seasons】Our lightweight sleeping bag can be used for 3 seasons (spring, summer, autumn). You can feel warm and cozy when you are in 32℉-41℉, and the limit temperature is 6.8℉. This flannel sleeping bag can keep you warm and comfortable in 3 seasons, enjoy a wonderful evening！

[COMFORTABLE AND WARM]AEGISMAX down sleeping bag is made of 95% goose down filling and 5% feather with 800 fill power and soft skin fabric, Filling capacity: 230g.keep you warm and comfortable all night! Recommend Sleepzone:+6℃(43℉)to +10℃(50℉).Extreme:0° C/32℉. For cold sleepers temperatures below +7°C (45°F) need to wear thermal underwear and down clothing to sleep.Down has the highest weight-to-warmth ratio of any insulation and is the most compressible insulation!

[REGULAR SIZE] Regular Green Length:71''*31''(180cmX80cm)Chest circumference 63''(160cm) , Hip circumference 51''(130cm),Foot circumference 36''(92cm). Recommended Height for User: Regular Size-women under 170cm/5'7, NOT for tall people. While you choose, if you're hesitant about regular size, go for a Large size,because the mummy style is designed according to the human body and the space will be smaller, but the warmth is good.

[DRAWSTRING DESIGN] Drawstring design at the neckline which can effectively prevent the cold air from entering the sleeping bag, protect the shoulder and neck from air leakage, and better lock the temperature. Left and right stitching function, open the zipper on the side of the sleeping bag. The Regular green zipper left opening and Large black zipper right opening can be linked together as double sleeping bags.The zipper cannot be fully opened, it can be pulled to the knee position.

Warm & comfortable: The sleeping bag is made of microfiber filling, which can keep warm and cozy even in cold night. This double sleeping bag sleeps 2 adults with ample room and comfort.

Durable outer shell: Our double sleeping bag for adult is crafted with high quality water-resistant nylon, lined with microfiber fabric and filled with microfiber that designs to last a lifetime in the most severe conditions.

Dual Usage: The double sleeping bag , which fits two happy campers comfortably, and can be disassembled by a zipper to become two independent sleeping bags.Imagine the memories you will leave with it.

【Plenty Of Space】Sleeping Bag Size 86.6 inch x 32.48 inch. Pack Weight is 4lbs, the compressed packing size is 11''-14.2'' and would take up less space. High-quality three zipper give you more comfortable camping experience.

【3-4 Season Sleeping Bag】Comfort - 41℉, it's the warmth level that women would like for a comfortable night's sleep. Limit - 32℉, this is the lowest temperature that a 'standard' man would need for a comfortable nights sleep. Extreme - 23℉, This is the coldest temperature you can survive in, in this particular bag without freezing to death.

【Camping Sleeping Bag Design】Separate zipper at the foot to allow more warm or cool air to enter or exit the bag in different times of the season. There are two zippers on the side, which can make two sleeping bags of a specific color spliced together to become a large double sleeping bag for couples, sisters.

【Warm and Cozy】This flannel sleeping bag adopts 400g/㎡ hollow fiber filling, soft flannel lining, and high-quality and durable polyester ripstop fabric. For this reason, the cotton sleeping bag is quite warm, soft, comfortable, skin-friendly, and water-resistant. The adult sleeping bag can help you to get rid of a tiring day of hiking, camping, and travel.

【3 Season Warm Sleeping Bag】 KingCamp flannel sleeping bag with 400g/㎡ hollow fiber filling can provide you with warmth and comfort while sleeping at night. It can be used for warm and cold weather in 3 seasons. The windproof strip near the zipper can block cold air. This adult sleeping bag Temperature range: Comfort: 39℉.The sleeping bag is the ideal option for camping as it can be the convenience needed for three seasons (spring, winter, and fall).

【Big and Tall Sleeping Bag】The xl sleeping bags for adults are 74.8"×33", wider than regular camping sleeping bags, giving you wiggle room so you will feel cozy in any position. The left-zip backpacking sleeping bag can be easily zipped together with a right-zip one to create a super large double sleeping bag.

Warm Weather Sleeping Bag for One Person or Two Kids to Sleep in: The size of the sleeping bag is 86.6” x 31.5'' (220 x 80cm), that provides a large size roomy experience and fits one person or even two kids to comfortably sleep in. There are double size zippers designed on the sleeping bag for you to allows for closure while lying inside.

Skin Friendly Sleeping Bag with a Portable Pocket Bag: The material of the sleeping bag adopts waterproof 210T polyester in the outer, and 190T polyester pongee used in the lining. Especially, 300G/M*2 faux silk cotton is added as filling in the inner fabric of the sleeping bag. Thus, the sleeping bag makes it gentle on the skin and keep you comfortable at night in the freezing temperatures. Besides, there is a pocket bag on the top of the sleeping bag for your phone, a drink, or snacks, etc.

Adhesive Securing Strap and Drawstring at Headrest Keep you Warm and Snug: The adhesive flap at the top of the zipper keeps the zipper from sliding down when you move around. Besides, the drawstring is a nice feature to snug the back of the bag over your head and keep the warmth inside.