Top Expandable Waterproof Backpacks

Briggs & Riley @ Work Upright Briefcase, Black, Medium

  • Expandable Brief: This compact rolling briefcase has just enough space for your laptop and files, plus a little extra room in case your business day trip turns into an overnighter. Accommodates most 15.6" laptops.
  • Smart Design: Made with ballistic nylon outer fabric that resists wear, moisture, dirt and abrasion. This rolling expandable brief features a RFID blocking pocket to help protect personal data.
  • Lifetime Guarantee: We're the only luggage company that offers an unconditional lifetime guarantee. If your bag is ever broken or damaged, we'll repair it free of charge, no proof of purchase needed, no questions asked.
  • Explore Our Collection: We make a wide array of durable luggage including carry ons, duffels, rolling garment bags and hardside spinners, plus backpacks, briefcases, crossbody sling bags and much more.
  • Engineered for Reality: We craft luggage for real world needs to make travel easier and more efficient, with innovative handles, pockets, and expansion systems for high functionality and more storage space.
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Motorcycle Helmet Backpack for Men Women, 45L Large Capacity Waterproof Expandable Helmet Holder, Cycling Helmet Storage/Hiking Helmetcatch Bag/Military Tactical Backpack With Molle System

  • 【Convenient Cycling/Motorcycle Backpack】This helmet backpack is specially designed for helmet travelers, you can hands-free to carry the helmet anywhere. All expandable helmet straps can be adjusted, not only can hold helmet of various sizes, but also can hold basketball, football, volleyball, etc..
  • 【Versatile & Multi-Compartment Expandable】Motorcycle helmet backpack is designed with 4 compartments, 1*Front upper Pocket, 1*Middle Pocket, 1*Main Pocket, 1*Back Pocket. Each compartments has mesh pocket or zipper pocket to help with organization. Each compartments has two zippered closures, and the main pocket can fully open all the way down to the bottom like suitcase, allowing you quickly find what you need..
  • 【Military MOLLE System】Using the traditional molle system of military tactical backpacks, it is convenient to attach more equipment. There are molle connection straps on the front, sides and shoulder straps of the backpack, which can hung water bottle, hang bag, glasses, interphone, carabiner, small flashlight or other outdoor gear. The shoulder straps have two D-rings for hanging things..
  • 【Durable & Comfortable】The school backpack is made of high density double-stitched 900D Oxford & Polyester fabric, waterproof and tear-resist....
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JanSport Agave Hiking Backpack - 32 Liter Daypack with Universal 3L Hydration System or 15 Inch Laptop Sleeve, Black

  • THE MOST TRUSTED NAME IN BACKPACKS - Our belief in our packs is strong! Every JanSport comes with a lifetime warranty. Carry your JanSport with confidence, knowing we'll replace or repair any breaks.
  • LIGHTWEIGHT DAYPACK - Durable fabric, with AirCore shoulder straps, adjustable sternum strap, waist belt & side compression straps for a secure and comfortable carry.
  • FUNCTIONAL PACK - Stay organized with a snap closure expandable main compartment, quick access & padded loft pocket for accessories, secondary compartment with organizer panel, and dual side water bottle pockets.
  • VERSATILE BACKPACK - Use for school & outdoor adventures.
  • Padded internal sleeve designed to fit a 3L hydration system or fits up to a 15" Laptop.
  • AMERICAN TRADITION IN BACKPACKS – Generations have grown up & come to rely on this trusted brand. Over 50 years of schools, work, road trips, discovering fun, freedom & adventure.
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HINHIN Casual Travel Laptop Backpack Unisex School College Backpack,Business Oxford Cloth Durable Waterproof Laptops Backpack Fits 15 Inch Laptop,Black Meteor Print Backpack Outdoor Hiking Daypacks

  • ...The fashionable meteor print backpack is suitable for all student backpacks, collage backpacks, high school backpacks, middle school backpacks, boy backpacks and teenager girls backpacks. Suitable for business backpacks, business backpacks, leisure backpacks, computer backpacks, office backpacks, laptop backpacks, waterproof sports backpacks.
  • ✔【PRACTICAL PERFORMANCE】: This backpack is very spacious and can hold books, water bottles, umbrellas, iPad, A3 files, wallets, clothes, mobile power, and is an ideal choice for outdoor activities such as business, travel, weekend vacation, shopping, professional office work, etc. Activity selection. This backpack is also a great gift for college and high school students, boys, girls, teenagers and men and women.
  • ✔【BACKPACK MATERIALS AND SPECIFICATIONS】: Fashionable backpacks are made of imported environmentally friendly materials and nylon anti-wrinkle fabrics,They are soft and stylish,The spacious space can accommodate school life necessities and stylish designs,It is very suitable for light commuting or students,Size: 18*13*6 Inch.
  • ✔【BACKPACK COMPARTMENT】: There are a total of 7 compartments, of which one main pocket with a laptop protective cover can accommodate 15 inch laptops, clothes, books....
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Travel Backpack, BuyAgain 3 in 1 Carry on Backpack 33L Waterproof Hiking Rucksack Traveling Camping Outdoor Backpack Travel Bag for Men Women

  • Large Capacity20.7"H x 12.6"L x 7.2" W, the Carry-on travel backpack has an expandable capacity of 33L, featured with 3 zipper pockets, 1 laptop compartment(fits up to 15.6), 2 accessories pockets, 2 pen slots, 1 bottle / umbrella pockets..
  • Waterproof & Durable: Made of high quality nylon fabric, the outdoor backpack is water-resistant, durable and easy to clean, keeps your items dry in rainy days, providing strengthening and long-lasting performance with minimal weight..
  • Comfortable & Breathable - Mesh cushion padded shoulder straps with great air-permeability is comfortable for you to carry on, relieving pressure on your shoulder and back..
  • Three Ways for Carrying: 3-in-1 travel backpack, also can be used as a weekend duffle bag and crossbody shoulder bag.
  • The travel bag is designed with concealable backpack straps, and easy to carry handles..
  • WORRY-FREE SHOPPING: If this hiking backpacks can't meet your satisfaction or any problems with your survival backpack , please contact our friendly customer service team through Amazon, we will solve it as soon as possible..
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Essential Expandable Tools for Travel

  • 【Super Strong and Lightweight】The trekking poles weigh only 9.6 ounces each, so you won't feel heavy. PJPP.
  • 【Travel Essentials】Our trekking poles can be easily packed and stored in suitcases, backpacks and duffel bags.
  • 【NEW IMPROVED MODEL】The trekking poles come with padded straps for maximum comfort and ergonomic grip..
  • 【After-sale service】If you have any questions, please feel free to contact us, and we will answer you as soon as possible..
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WUDON Men Travel Backpack, Genuine Leather-Waxed Canvas Shoulder Hiking Rucksack (Khaki)

  • ...x 17.7”(45cm) (H), allows you to carry laptops. Main compartment features a padded sleeve with open wall pockets and stays secure under a flap with drawstring closure.
  • EXCLUSIVELY FOR ADVENTURERS - Our basics travel backpacks was designed for the doers in life: Made with waterproof & durable waxed canvas to protect your tech and with genuine crazy horse leather that allows for heavy duty, daily use. International travel or take it with you on a daily basis, to the edge of the world.
  • CREATED FOR THE ROAD - We make no cutbacks in craftsmanship so as to never be surprised by something breaking right when it’s not supposed to. Boasting a solid construction with tensile stitching & rust-resistant, zine-alloy rivets & hardware, our travel rucksack is a mighty road-beast.
  • FOR DAILY, HEAVY-DUTY USE - College, Traveling, Hiking, Camping, Shopping, you name it, our travel bag will be your trusty companion through it all. With a spacious main pocket as well as 3x storage pockets for all your needs, you can carry your laptop, cameras, tablets, Phones, clothes & gadgets, in unparalleled fashion.
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Back Expandable Cat Backpack Carrier, Fit up to 12 lbs, Space Capsule Bubble Window Pet Carrier Backpack for Cat and Small Puppy

  • TRANSPARENT BUBBLE FRONT + EXPANDABLE BACK. This cat backpack carrier increase your pet's visual space via front transparent hard shell, gives more room and play time inside by expandable back panel. The real ever bigger expandable cat backpacks..
  • BREATHABLE SPACE CAPSULE BUBBLE CAT BACKPACK. Extra 9 vent holes around this carrier backpack and two side windows to perform great air circulation inside. Expanded back panel to be a giant tent bed for your furry friends to enjoy outdoor time with nature and sunshine well without feeling stuffiness in the backpack, the best ventilation ever..
  • ECO-FRIENDLY AND NON-TOXIC PET-SAFE MATERIALS MADE BACKPACK FOR CATS. Light weight and super wear-resistant shell perfectly against biting and scratching by pets. Entire backpack is less than 3 lbs only, suggest for cats from 1-12lbs and small dogs from 1-10lbs to leave enough room inside to turn around. Roomy backpack for pet to lie down and stand up. Airline Approved..
  • TWO CARRYING WAYS. Portable and Wearable shoulder pet carrying carrier backpack with adjustable chest buckle for travel and hiking outdoor activity, the real travel backpack for cats..
  • This backpack for cats, great bookbag carrier for cat provides protection for your furry friends and adheres to Amazon's ....
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WUDON Men Travel Backpack, Genuine Leather-Waxed Canvas Shoulder Hiking Rucksack (Green)

  • ...7.7”(45cm) (H), allows you to carry large laptops (16”), tablets & all necessary apparel. Main compartment features a padded sleeve with open wall pockets and stays secure under a flap with drawstring closure.
  • EXCLUSIVELY FOR ADVENTURERS - Our basics travel backpacks was designed for the doers in life: Made with waterproof & durable waxed canvas to protect your tech and with genuine crazy horse leather that allows for heavy duty, daily use. International travel or take it with you on a daily basis, to the edge of the world.
  • CREATED FOR THE ROAD - We make no cutbacks in craftsmanship so as to never be surprised by something breaking right when it’s not supposed to. Boasting a solid construction with tensile stitching & rust-resistant, zine-alloy rivets & hardware, our travel rucksack is a mighty road-beast.
  • FOR DAILY, HEAVY-DUTY USE - School, College, Traveling, Hiking, Camping, Shopping, you name it, our travel bag will be your trusty companion through it all. With a spacious main pocket as well as 3x storage pockets for all your needs, you can carry your laptop, cameras, tablets, Phones, clothes & gadgets, in unparalleled fashion.
  • EVERYDAY LEATHER BACKPACK - Canvas leather rucksack can be used as a school daypack, international travel backpacks, s....
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Laptop Backpack Work Business Slim Backpack 17'' Computer Men Women Expandable Lightweight Water-Resistant Durable Casual Daypack Anti-Theft USB Charging Port Bookbag for Travel College School-Black

  • Slim, Light-weight & Expandable Backpack ★ The size of laptop backpack for men is, 18.9'' * 12.6 '' * 3.15 / 7.48''. The travel backpack is Only 800g. This mens backpack can be used lightweight backpack for business, 17 inch laptop backpack, portable backpack, college backpack, travel backpack, weekend bag, bookbag for university, slim backpack for men and women, personal carry on backpack for adults. This practical large laptop backpack is ready for everywhere..
  • Large Capacity & Organized ★ The 17 inch laptop backpack has a compartment for 17/ 15.6 / 14/ 13-inch laptop with 11-inch iPad. This computer backpack for men has 3 elastic mesh pockets,5 nylon pockets, and 2 pen pockets. As a men's or women's backpack, you will enjoy It's fashionable, comfortable and convenient everywhere..
  • Water-Resistant & Anti-theft ★ The waterproof backpack use new material Oxford, with YKK zippers, which is water-resistant, durable and fashion, ensure long-lasting daily use. The anti theft backpack women can be attached to the suitcase, The YKK zipped anti-theft pocket located on the back of backpack black, which keeps your phone, wallet, passport, and other valuable items safe and handy. Perfect for weekend getaways, shopping, office work, business trave....
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Uiter Pet Carrier Backpack, Expandable Breathable Mesh Cat Backpack Carrier for Small Cats Dogs, Ventilated Design Pet Backpack Bag for Travel Camping Outdoor Use

  • 【Expanable Big Space Carrying Bag】 The backpack pet carrying bag is the perfect pet carrying bag for you when you need to take your pet out and about. Our pet backpacks have a space size of (16.9" H x 13.4" L x 8.7" W) and an expandable area on the back to bring your pet more space to move around and ease the anxiety of traveling..
  • [Breathability & Visual Design] We use breathable mesh material at the expandable area and netting part. With the extra mesh, It provides good ventilation while maintaining a certain level of shade and give a comfortable journey for your pet. The mesh cover on the top of the backpack can be opened and secured by straps, so you can pet or feed your pet through this design..
  • [Premium Material More Durable] Our pet carrying bag was made of high-quality Oxford cloth provide outstand waterproof, scratch-resistant, environmentally friendly, non-toxic and non-irritating effect. Let your pet breathe freely and relax. Provide excellent quality, while the backpack is light and not to cause additional burdens, allowing both you and your pet to fully enjoy the journey. The interior is padded with soft foam to ensure your pet's safety and comfort..
  • [More Useful Design] Our pet backpack has many thoughtful details designed to give both....
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National Allergy Hypoallergenic 100% Waterproof Mattress Protector

  • COMPLETE PROTECTION: The waterproof layer protects against fluids. The protective waterproof material prevents moisture from penetrating through to your mattress..
  • 100% BREATHABLE COTTON COVER: The waterproof layer is made from soft cotton fabric that keeps the surface of the mattress protector cool and comfortable..
  • EXPANDABLE SKIRT: The expandable skirt is designed to stretch over mattresses up to 18 inches deep, keeping it securely in place while providing a snug fit..
  • QUALITY MATERIALS: Our waterproof mattress protectors are free from potentially harmful chemicals, so you can rest easy at night..
  • LIFETIME WARRANTY: Each of our mattress covers are made in the USA and boast a premium lifetime warranty so you can buy with confidence knowing you can request a replacement at anytime..
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