This pet backpack is ideal for traveling, camping, hiking or simply take your pets to visit a veterinarian.1. Large Space with Great Ventilation:With breathable ventilation mesh in four sides not only ensure adequate air flow, but also allow the animal to look out and observe the surrounding environment.2. Great Comfort for Pets:The sturdy and comfortable bottom base will offer a solid and stable surface for your pet in moving. And the double-sided used mat will be perfect for different seasons.3. Ergonomic Design Backpack:With padded on the back and widened should strap, the backpack will help reduce load and increase comfort. The widened mesh shoulder straps are adjustable and comfortable for breathability4. Safety Design with Double Protection:The built-in safety strap that you can attach to the collars of your pet will help prevent the pet from escaping from the inside when opening the top. And the top, bottom and front lockable zippers ensure that your pet cannot open the door by itself.6. About Measure Your Pet Before Purchasing:The backpack dimension is 33*26*40 cm, suitable for small dogs and cats up to 15-pounds. Please measure your pet's size and reserve extra space leave for your pets before purchase, in case the carrier is not fixed for your pet. Leaving enough room inside the bag for your pets to turn around will make it feel comfortable in the enclosed spaces.Length: Measure from your pet's chest to tail.Height: Measure from the floor to the top of the pet's back.