Dog Carrier Backpack Dimensions:This medium dog backpack carrier measures 14.1"L*8.2"W*17.3"H, suitable for medium dogs/cats whose WEIGHT vary 6-14lbsBACK LENGTH vary 11-16 inches. Please check the SIZE CHART before purchasing. Adjustable Neck hole:The neck hole of the dog front carrier backpack with a drawstring, easy to adjust the opening size to keep your pet's head moving freely to get a good view and make not too tight, so you can communicate with pet intimately. And the pet dog backpack carrier is made of breathable mesh cloth and fabric , which make sure your dogs/cats feel comfortable inside. Safety & Detail Design:The puppy carrier backpack built-in adjustable safety buckle with clamp can connect with pet's collar/harness which will prevent pet from escaping and keep pet safe. Adjustable waist strap with buckle keeps the backpack stable and gives you extra support and prevents falling. This pet carrier backpack has two side pockets and one front pocket, which can store a collapsible pet bowl, water glass, leash, whistle, snacks, poop bag, mobile phones and other necessities. Removable Bottom Cover & Padded Shoulder:The hard bottom cover of doggie carrier backpack gives dogs/cats good support, its detachable and easy to clean, makes your pet feel comfortable and rest better. The adjustable shoulder straps and back are made from thickened sponge and breathable mesh, which can help reduce the burden from shoulder and back, making it easier and comfortable to carry dogs/cats. Enjoy Your Time with Your Pet:The dog travel carrier backpack can be worn on the front or back, and its lightweight and portable, which you can easily use to carry your pet to walking,biking,outdoor,hiking,camping,travelling and experiencing more adventures together. The pet dog carrier front backpack is suitable for varieties of small and medium-sized pets such as cats,chihuahuas,teddies,mini poodles,Shih Tzu,Pomeranians,Havanese,Yorkshire terriers and so on.