[Expandable and Foldable] This cat backpack features an extra-wide, expandable backrest that provides your pet with generous space for activities and reduces anxiety. And when not in use, it can be folded flat for easy storage. [Recommended Pet Size] The maximum load capacity is 8-12 kg. Suitable for 2 cats or rabbits up to 10 kg; suitable for a small or medium-sized dog up to 8 kg. [Breathable and Comfortable] The dog backpack has 3 entrances (top, front, and back) for easy access; 5-sided well-ventilated mesh window for visibility and air circulation, it is also equipped with Washable mat for your pet to rest [Comfort during travel] Comfortable backrest, wide shoulder straps and chest strap relieve the back and shoulders, 2 side pockets allow you to store accessories for your pet, and the safety leash prevents your pet from escaping, making this pet backpack a comfortable companion for long trips.