Pet Carrier Backpack for Cats,Dogs and Small Animals,Portable Pet Travel Carrier

🧿REAR EXPANDABLE DESIGN: With the rear expandable design, the space inside the backpack can be doubled. It not only increases air circulation, but also allows your pet to stay in it more comfortably and move around more freely 🧿BETTER VENTILATION&VISIBILITY: The most important improvement of this backpack is to ensure excellent ventilation and visibility at the same time. 1 large transparent acrylic window, 3 breathable mesh windows and 9 venting holes, provide plenty of air and excellent view for your pet 🧿STURDY&SAFE STRUCTURE: Equipped with a firmly reinforced structure, to prevent the backpack from collapsing on your pet while traveling. When you open the top mesh windows to let your pet stick his head out, the safety rope inside can prevent your dog from running away 🧿COMFORTABLE TO WEAR: Comes with both waist and chest buckles, to give you extra support and maintain the stability of the backpack, prevents pets from slipping. The shoulder straps are equipped with extra thick padding for more comfort during long trips 🧿MEASURE YOUR PET BEFORE PURCHASEING: Its external size is 13.4L x 10.2W x 16.5H while the internal size is 13.0L x 9.3W x 14.8H and can be 13.0L x 21.5Wx 14.8H after fully expanded. Recommended max load is 18 lbs. Do not select the backpack size based on weight only, please reference your pet's length(front feet to base of tail) and height(floor to top of head) in selecting a backpack size