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Best Expandable Bicycle Backpacks

Lixada Rear Bike Rack Bicycle Cargo Rack Retractable Aluminum Alloy Bike Mount Cycle Bicycle Rear Seat Post Rack

  • 【Sturdy】：This bike carrier rack is made of strong aluminum alloy structure, it supports up to 9kg (20lbs) cargo..
  • 【Large-capacity】：The bicycle rear rack is very suitable for long-distance riding and short-distance travel, and can accommodate many daily necessities. Fits most bicycle sizes..
  • 【Adjustable】：Attached to the bicycle seatpost, the adjustable mounting rod extends backward/forward according to your needs.It fit different bikes, retracted for easy storage..
  • 【Simple and Generous Design】: It does not require supports on both sides as support. The height is moderate, the objects will not be scratched on the wheels, which will affect the driving..
  • 【Simple Installation】: Easy to install with the included rubber pad and L wrench.Allow you to transport your cargo with ease and efficiency, perfect for use with panniers, backpacks, baskets, etc..
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Athletico Basketball Bag - Large Basketball Backpack for Men & Women - Volleyball & Soccer Black

  • Expandable exterior ball pocket with adjustable security buckle - fits basketball, soccer ball, or volleyball. A perfect carrier for all your travel....
  • Our basketball backpacks feature a hidden shoe compartment to isolate dirt and odor from your shoes..
  • Padded laptop/tablet sleeve with security strap, expandable side bottle pockets with reinforced bottoms,.
  • This unisex sports bag is constructed from water-resistant, rip-stop fabric and is built to last. Includes extra-thick padded back pack straps and....
  • BACKED BY THE ATHLETICO 100% SATISFACTION GUARANTEE - If your are not satisfied with your new gym bookbag for any reason, simply return it for a full....
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Greencity Small Assault Rucksack Military Daypack Hiking Daypack School Backpack Tactical Backpack（Black）

  • ...g with Molle webbing for availability to add pouches and hook items onto.This hydration backpack with durable open-cell foam lumbar pad and molded channels for Weight distribution.The shoulder pack would be an comfortable strap with padded..
  • ORGANIZED COMPARTMENTS - This backpack also features plenty of spaces and 4 expandable compartment . it has unique compartments for MP3 Player, mobile phone,up to 13 inch laptop ,and Hydration.Perfect to be an gift for laptop backpacks or school backpacks..
  • LIFETIME WARRANTY -- The backpack hiking design support quality guarantee 30 days Full refund, 12 months free for Accessories ,such as zippers and lifetime customer service.We have our own warehouse in California and Texas..
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Greencity Small Assault Rucksack Military Daypack Hiking Daypack School Backpack Tactical Backpack（Grey）

  • ...g with Molle webbing for availability to add pouches and hook items onto.This hydration backpack with durable open-cell foam lumbar pad and molded channels for Weight distribution.The shoulder pack would be an comfortable strap with padded..
  • ORGANIZED COMPARTMENTS - This backpack also features plenty of spaces and 4 expandable compartment . it has unique compartments for MP3 Player, mobile phone,up to 13 inch laptop ,and Hydration.Perfect to be an gift for laptop backpacks or school backpacks..
  • LIFETIME WARRANTY -- The backpack hiking design support quality guarantee 30 days Full refund, 12 months free for Accessories ,such as zippers and lifetime customer service.We have our own warehouse in California and Texas..
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Greencity Small Assault Rucksack Military Daypack Hiking Daypack School Backpack Tactical Backpack（Black Multicam）

  • ...g with Molle webbing for availability to add pouches and hook items onto.This hydration backpack with durable open-cell foam lumbar pad and molded channels for Weight distribution.The shoulder pack would be an comfortable strap with padded..
  • ORGANIZED COMPARTMENTS - This backpack also features plenty of spaces and 4 expandable compartment . it has unique compartments for MP3 Player, mobile phone,up to 13 inch laptop ,and Hydration.Perfect to be an gift for laptop backpacks or school backpacks..
  • LIFETIME WARRANTY -- The backpack hiking design support quality guarantee 30 days Full refund, 12 months free for Accessories ,such as zippers and lifetime customer service.We have our own warehouse in California and Texas..
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UT Backcountry Discovery Route

  • 【30L Expandable Capacity】This motorcycle tail bag can be expandable to 30 Liter. Size: 14.6"L x 12.2"W x 7.9"H Standard / 14.6"L x 12.2"W x 11.8"H Expanded. Large storage room for carrying clothes, shoes, helmet, Ipad, and lunch. Compatible for most motorcycle models such as CB600RR, iron883, MT10, FZ07 09, R1200GS. NOTE: Doesn't fit dirt bike and bicycle..
  • 【Universal Dual Use Bag】 Our motorcycle rear seat bag was designed with universal strap mount for motorcycles. Dual multifunctional used as a handbag and backpack for easy movement..
  • 【Brilliant Rain Cover】kemimoto motorcycle rear bag constructed from 1680D leather fiber, which water-resistant, tear-resistant and highly durable. A totally waterproof bag with rain cover to keep your luggage getting wet..
  • 【Practicality and Versatility】There is a zipper side pocket for store wallet, keys, cigarette, goggle.
  • A main internal mesh bag for store Ipad, gloves, lunch.
  • 30L Expandable Large Capacity for store luggage, camera, and can store full helmet, half helmet, racing helmet..
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X&X Mini Tactical Backpack Hydration Pack Small Assault Rucksack 30L Molle System with Laptop Compartment Expandable (Bladder no Included)

  • PACK SMALL,THINK BIG -- This travel backpacks get overall design of waterproof,hydration pack, molle and airflow system.The front pocket support to patch flag,military,battle,name,etc. From Tactical To Practical, It‘s your ultimate hydration backpack,assault pack,hiking daypack,diaper organizer,etc..
  • DURABLE ,HYDRATION -- As camping backpack sturdy material of 600 denier polyester fabric,strong stitching ,and reinforced carry handle make it durable. Insulated bladder compartment, you could sit up to 2.5L bladder.（Bladder not included）.
  • MOLLE,AIR FLOW SYSTEM -- Bag with Molle webbing for availability to add pouches and hook items onto.This hydration backpack with durable open-cell foam lumbar pad and molded channels for Weight distribution.The shoulder pack would be an comfortable strap with padded..
  • ORGANIZED COMPARTMENTS - This backpack also features plenty of spaces and 4 expandable compartment . it has unique compartments for MP3 Player, mobile phone,up to 13 inch laptop ,and Hydration.Perfect to be an gift for laptop backpacks or school backpacks..
  • LIFETIME WARRANTY -- The backpack hiking design support quality guarantee 30 days Full refund, 12 months free for Accessories ,such as zippers and lifetime customer service..
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M-Wave Multi-Fit Adjustable Bike Rack, Black

  • Rack mounts to back of your bicycle to help you easily transport your gear.
  • Durable alloy rack can carry up to 55 pounds.
  • Ideally used with panniers, backpacks, baskets, etc..
  • Universal fitting set for 24, 26, 28" wheel sizes.
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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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Dog Puppy Sling Backpack Crossbody Shoulder Bag Travel Hiking Daypack Casual Bookbag One Size

  • Sling Bag for Men & Women: One shoulder backpack perfect for who don't want to carry bulky backpacks go out. Store just what you needs to carry without stuffing your pants pockets. Keep your pockets free..
  • Size: 15.3 x 3.5 x 7.5 inches, sling backpacks made of durable, lightweight high quality polyester material, very portable. Shoulder strap is adjustable to meet different requirements..
  • Multipurpose Shoulder Bag: Chest pack, sling bags, casual daypacks, rucksack, travel bag, outdoor backpack, one strap bookbag, small backpack purse, business bag. This crossbody purses is perfect item for every season all the year, fashionable and super cool..
  • Perfect Applications: Suitable for daily use, hiking, cycling, office, sport, business, gym, walking dog, shopping, skating, bicycle, camping, travel, jogging, running, amusement park, vacation essentials..
  • Best Gift: An indispensable mini backpack for your necessities. Good for womens, mens, girls, boys, teenagers. Ideal gifts for birthdays, thanksgiving, christmas and so on..
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Charleston

  • Tervis tumblers feature double-wall insulated construction that keeps drinks hot or cold longer and reduces condensation to prevent rings on your table..
  • Strong, impact resistant BPA-free material means these water bottles can take a tumble without shattering and won't retain tastes or odors..
  • Our 24oz classic water bottle features a BPA-free single-latch flip lid with loop for easy carrying, and slim bottom to fit some bicycle cages and backpacks..
  • Most water bottles are microwave, freezer and dishwasher safe for no-worry convenience and fit most cup holders..
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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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BABEYER Dog Bike Basket Expandable Soft-Sided Pet Carrier Backpack with 4 Open Doors 4 Mesh Windows for Small Dog Cat Puppies - Grey

  • ...ich makes more convenient and safer to put your dog cat in or out. 4 mesh window acts as cooling air vent, making sure that your dog doesn’t get overheated. Dog bike basket backpack reflective tapes can increase safety for your pet when using at night.
  • Expansion Bike Dog Carrier: The dog bicycle basket right sides expandable to create extra room of our spacious pet bag for your cats or dogs to stay comfortable, the left side pocket for you to store folding dog bowls, toys, snacks, poop bags, etc. It is easy to fold into one piece for storage in the drawstring bag (included).
  • Multifunctional and Practical: The flap on the top can cover the dog in case of sudden rain and avoid getting wet. This bag is not only a bicycle pet bag, but also can be used as a pet carrier backpack, pet carrier shoulder bag, meet your different needs.
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