Best Birthday Mailers in 2026

🍀【Durable Materials】: Crafted with virgin polyethylene plastic. Our poly mailers are made to be incredibly durable to resist punctures, tears, and moisture. They are waterproof and tearproof. The explosion-proof edge and strong viscosity will help protect your items from losing.

🍀【Unique Design】: Our pretty poly mailer bags are a great choice if you are tired of plain normal mailers. The watercolor painting flower is uniquely designed. It’s not only good for packaging for your business but also for wonderful gift packaging.

🍀【Wide Application】: The 10x13inch mailer bags are quite useful packaging bag for T-shirts, blankets, scarves, or other non-breakable items of daily use, professional packing to protect your item, excellent mailers provide convenient and high-quality, low-cost transportation services. The unique design packing creates a new look for your goods.

12X15.5 Poly Mailers with Handle - Most usual poly bags 12x15.5 inches pack of 100. Suitable for most small lighter and non-fragile items. Our plastic poly mailers with sweet " Thank You " design and convenient handle will make your items stand out from a bulk of products !

Strong & Durable Construction - This kind of shipping bags select thicker polyethylene material which is more 0.01 mm thicker than usual shipping bags, tear-resistant, stronger, better protective and heavy duty .

Great for Packing Gifts - Bright color with " Thank You" attractive design make these miling bags perfect for packing most all kinds of gifts, best Christmas gift bag. Choose poly mailers, choose METRONIC ! Let's make a big surprise for your customers together!

【Opaque Bubble Mailers】Outer dimensions of bubble mailer: 8.5x12 in; inner dimensions: 8.5x11 in. Lined with air bubbles and opaque materials, our bubble mailers will protect your contents and privacy. It can help you deliver your Christmas gifts safely.

【Durable】No matter the destination or weather, our waterproof and ultra-durable padded envelopes will ensure your contents are safe and secure.

【Economical & Easy to Use】Each bubble mailer contains a strong self-sealing adhesive strip. Simply peel and fold over to seal each package safely and securely. Our bubble bags are lightweight and convenient to use. No additional packaging materials are needed, which can improve your company productivity at work, save time and mailing costs. Use high-quality bubble bags to replace heavy packing boxes and flimsy, cheap-looking bags！

♻️ 100% Biodegradable : Made of PBAT and modified corn starch in accordance with the standards of ASTM 6400, EN13432, BPI and OK COMPOST. They generates less CO2 than traditional plastic.

♻️DURABLE PROTECTION - 2.5 mil top-quality biodegradable poly mailers are tear and puncture resistant. Even though biodegradable Shipping envelopes don't offer interior cushioning, they are made to withstand the rigors of the shipping process.

♻️SOCIAL RESPONSIBILITY - Using biodegradable shipping supplies will speak volumes about your sense of social responsibility and the high grade of your brand

The Black shipping box is made of three-layer pressure-resistant corrugated cardboard, which is lightweight but sturdy, and are ideal boxes for packaging fragile items.

Corrugated cardboard boxes are manufactured from one-piece tool die-cutting, which allows for neat, smooth, and burr-free edges.

Shipping boxes for small business have a sense of fashion and style. The classy mailer box is perfect for small businesses to ship their e-commerce orders. It also makes a great gift box for occasions like Christmas, Birthdays, Valentines, Wedding Anniversaries, etc.

The Black shipping box is made of three-layer pressure-resistant corrugated cardboard, which is lightweight but sturdy, and are ideal boxes for packaging fragile items.

Corrugated cardboard boxes are manufactured from one-piece tool die-cutting, which allows for neat, smooth, and burr-free edges.

Shipping boxes for small business have a sense of fashion and style. The classy mailer box is perfect for small businesses to ship their e-commerce orders. It also makes a great gift box for occasions like Christmas, Birthdays, Valentines, Wedding Anniversaries, etc.

The Black shipping box is made of three-layer pressure-resistant corrugated cardboard, which is lightweight but sturdy, and are ideal boxes for packaging fragile items.

Corrugated cardboard boxes are manufactured from one-piece tool die-cutting, which allows for neat, smooth, and burr-free edges.

Shipping boxes for small business have a sense of fashion and style. The classy mailer box is perfect for small businesses to ship their e-commerce orders. It also makes a great gift box for occasions like Christmas, Birthdays, Valentines, Wedding Anniversaries, etc.

White Shipping Boxes: Made of recycled cardboard paper, eco friendly. Outer size: 7x5x4 inches; Inner size: 6 5/8 x 4 7/8 x 3 7/8 inches, 25 pack, white color.

Heavy Duty Cardboard Boxes: Rugged 3 layers thick kraft construction, This reinforced corrugated boxes superior protection for your valuable items. Lightweight but sturdy for shipping. Can be easily used for UPS, USPS, Fedex shipping.

Easy to Assemble White Mailer Box: come flat, can be assembled quickly without any tools like tape or glue. Tab locking makes this small packing boxes closed security. Protect your product so that it can arrive safely.

The Pink shipping box is made of three-layer pressure-resistant corrugated cardboard, which is lightweight but sturdy, and are ideal boxes for packaging fragile items.

Corrugated cardboard boxes are manufactured from one-piece tool die-cutting, which allows for neat, smooth, and burr-free edges.

Shipping boxes for small business have a sense of fashion and style. The classy mailer box is perfect for small businesses to ship their e-commerce orders. It also makes a great gift box for occasions like Christmas, Birthdays, Valentines, Wedding Anniversaries, etc.

Black Shipping Boxes: Made of recycled cardboard paper, eco friendly. Outer size: 12x9x4" inches; Inner size: 11 5/8 x 8 7/8 x 3 7/8 inches, 20 pack, matte black color.

Heavy Duty Shipping Boxes: Rugged 3 layers thick kraft construction, This reinforced corrugated boxes superior protection for your valuable items. Lightweight but sturdy for shipping. Can be easily used for UPS, USPS, Fedex shipping.

Easy to Assemble Black Mailer Box: come flat, can be assembled quickly without any tools like tape or glue. Tab locking makes this small packing boxes closed security. Protect your product so that it can arrive safely.

Black Shipping Boxes: Made of recycled cardboard paper, eco friendly. Outer size: 13x10x3 inches; Inner size: 12 5/8 x 9 7/8 x 2 7/8 inches, 20 pack, matte black color.

Heavy Duty Cardboard Boxes: Rugged 3 layers thick kraft construction, This reinforced corrugated boxes superior protection for your valuable items. Lightweight but sturdy for shipping. Can be easily used for UPS, USPS, Fedex shipping.

Easy to Assemble Black Mailer Box: come flat, can be assembled quickly without any tools like tape or glue. Tab locking makes this small packing boxes closed security. Protect your product so that it can arrive safely.

🌲【25 Pieces Empty Shipping Boxes】- The 25 pieces premium quality white paper shipping boxes is approx. 5x5x5 Inch.Decent size for most regular size product, help to shipping product in a good condition.

🎁【Thickened & Sturdy】- The shipping boxes are made of high-quality recyclable cardboard which is recyclable and sturdy.Will not worry about accidentally breaking the carton and ruining the carton.Single walled cardboard boxes, 32 ECT grade for standard stacking performance.

🌸【White Shipping Box】- Create beautiful gifts you won't want to give away, by embellishing the boxes with washi tape, rhinestones, or decoupage paper! White paper boxes look effortlessly smart and stylish when left plain and tied with rustic twine. Try decorating them with cute ink stamps or stencil on a pretty design for a chic look.

【Perfect Size Bubble Mailers】The opaque large bubble mailers outer size is 10.5x16 inch, while the inner size is 10.5x15 inch.It is very suitable to transport for clothing, shirts,books,magazines, calendar, photo frames,christmas gifts and so on.

【Sturdy Bubble Mailer】Our bubble envelopes are crafted with only the finest polyethylene materials.these mailers are tear-resistant, puncture-proof,which exceptionally protect your packages, even though using on foggy or rainy days.

【Strong Adhesive Padded Envelopes 】The padded mailing envelopes are using four-season adhesive, which can maintain strong stickiness throughout the year, adhesive on the fold-over flap is strong enough,you no need reinforcement tape, preventing your items from being secretly replaced during transportation.

[KEEP YOUR GIFTS SAFE: WATER RESISTANT/DUST RESISTANT/SHOCK RESISTANT/TEAR RESISTANT] Made of strong polyethylene plastic with reinforced seams, the bubble mailer will keep your gifts safe during shipping. The padded envelope is resistant to water, dust, shock, and tearing, and is able to withstand potential abuse during shipping.

[LIGHTWEIGHT MAILERS: SAVE ON SHIPPING] Fosmon bubble mailers have a Christmas holiday design, making them stand out from other mailers and show off your holiday spirit. The padded envelopes are lightweight and will help you save on shipping.

[SELF-ADHERING ENVELOPES: EASY TO USE & TAMPER RESISTANT] The Christmas poly bubble lined envelopes come with a self-adhesive tamper-resistant seal, clearly showing if your package has been opened before.

● Super Jumbo 40 Gallon - 36" L X 16" H X 16" D, 150 Liters or 40 Gallon Volume. Plenty of space to store and protect just about any item. The extra large storage bags are perfect for moving and make a great lightweight, economical alternative to boxes for packaging. College students love these college essentials for moving in or out of college dorm rooms.

● Waterproof & Strong Load Bearing - The travel duffel bags are made of durable tear-resistant top quality 200gsm weight polyethylene, providing excellent waterproof performance. The moving storage containers will safely hold up to 120lbs. High-grade and tear-resistant material protects your items from water, dust, humidity, and other damage. The moving totes with lids can be used repeatedly, one of the strongest duffle bags in the market.

● Stronger Double Zipper Design - The heavy duty moving bags are foldable, a high-quality 3-sided bidirectional metal zipper design allows the travel duffle bag to be opened like a suitcase, easier to put items in, and out. The moving bags with handles are sturdy and durable, no need to worry about any tears or breaks during travel.

40 Pcs Total - 10 Pcs Each of ( Candy Cane, Reindeer Deer Elk, Christmas Stars And Christmas Tree ) 4 Different Styles!

Unsurpassed Water & Tear Resistance - Superior side seams combined with Heavy Duty polyethylene make these High Quality envelopes highly resistant to water, punctures, and tears

Pressure sensitive self seal - Easy packing, tamper-evident, and super secure closure

🚚【 MAILING BAGS DETAILS 】newlng Packing bags quantity : 100pcs. 4 Assorted Size : 6"x11"/25pcs,8"x12"/25pcs,10"x13"/25pcs,12"x17"/25pcs. Color : White. Material: PE. Small postage bags suitable for samples, books, mail, towels, socks, underwear etc.

🚚【ENVELOPES MAILERS】Environmentally friendly materials: shipping bags made of new materials, no odor, no allergies, strong load-bearing capacity and safe use.poly bags for shipping ideal for business and private use, to mail out your goods and items, to your customers, family or friends, in a safe and secure way.

🚚【PLASTIC POLYTHENE SELF SEAL PACKING】Shipping envelopes peel & seal sealing for quick .Just pack your contents, peel and seal, done! Easy packing.Once sealed, these packaging bags are hard to open, allowing your items to arrive safely without risk of opening or tampering. Shipping bags can be waterproof, no matter it rains, strong wind, stormy weather, this will ensure your mail is delivered safely to customers.

Valuable and Practical Set: there are 50 brown shipping boxes, sufficient to cover your various demands of using, replacing, sharing, they are ideal for packing gift, mailing parcels and storing your stuffs; They will also be packed flat to avoid deformation and breakage during transit

Strong and Dependable: made of quality corrugated cardboard, the boxes for small business are strong and dependable, hard to break or deform, reusable and functional, with a certain recoil to better preserve your mailing items

Ideal Size and Weight: measuring about 5 x 5 x 5 inches/ 12.7 x 12.7 x 12.7 cm, these shipping boxes for small business have the ideal size and weight for reducing shipping costs; They are ideal for mailing or packing compact and lightweight items, like small trinkets, mugs, small soaps, aromatherapy, snacks, and more

Square tubes will not roll around which makes them easier to pack and ship than traditional round mailing tubes.

These one piece tubes ship flat to save space.

Tubes fold together fast without tape or glue.