This pet carrier backpack is specially designed for cats and dogs, featuring an advanced space capsule concept that provides safe and comfortable travel experiences for your beloved petsThe extra-large transparent window allows pets to observe the outside environment, reducing stress reactions while enabling owners to monitor their pets& 39; status at all times Made of high-quality breathable materials with multi-side mesh design ensuring optimal air circulation to prevent pet discomfort from heat buildup The interior space is scientifically calculated with reasonable partitioning to provide ample room for pet movement Ergonomic double shoulder straps distribute weight pressure evenly, making long-term carrying comfortable without fatigue Equipped with safety buckle systems and leash attachment points, providing double protection against accidental pet escapes Optional disposable pee pad set offers excellent absorption performance, maintaining dry and clean interior conditions Ideal for daily outings, veterinary visits, travel, and various other scenarios, making it the perfect choice for pet owners Available in black and white colors with two size options to accommodate different pet sizes and needs