arge Space and Sturdy FrameThe approximate size of this pet backpack carrier is 13Lx11Wx165H the fully expanded size is 13Lx23Wx165H large space can accommodate a small medium cat or dog up to 20 lbs The built-in metal frame makes the backpack structure more solid and will not deform or collapse it is comfortable for you and your pet while traveling hiking attending a pet party or going for a walk in the park or taking your pet to the vet and other outdoor use ouble Safety guaranteeAll the zippers are equipped with locks except for pockets After you locked the zipper pets cant pull the zipper away themselves which can effectively prevent pets from jumping out There is also a safety strap inside the backpack when you want to open the top window to let your pets stick their head out just connected the safety strap to your pet collar it can prevent pets from falling down Breathable and comfortableetskd pet backpack is designed with 3-sided mesh windows to ensure breathability through these mesh windows your pet can maintain good ventilation and see the scenery outside easily If you open the top mesh window of the backpack your pet will have more space to interact with the outside world The backpack also has a two-way entrance for easy access to your pet Ergonomics Designetskd backpack is equipped with shoulder straps and chest straps to make you more stable when carrying pets The shoulder straps are equipped with extra thick padding for more comfort and reducing pressure on the shoulders The back of the backpack is extra thickened to prevent the bottom pad from hitting your back when you are carrying your pet Quality guaranteeOther features: Internal safety rope top sunshade cover enough storage pockets including one water bottle pocket and one garbage bag pocket This backpack is made with 600D solid polyester for a long-lasting experience We offer a 12 months warranty service and can be replaced for free on new models for quality problems within 12 months If you have any question please contact us