2 of them 1 pet carrier: 1-2 small or medium-sized pets or 1 long/large pets. Each pets have a place in this domestic cat backpack carrier, avoid fighting for space. Use it as a big cat backpack, turn the separatist for medium dog into a large dog backpack carrier. Travel/Veterinarian/Great for Walking .7 Large gas cloth screens: The ventilation area of our pet backpack constitutes 26% of the general area, allowing pets to breathe in the outdoor environment. High light transmittance gauze screen provides a good vision area for domestic animals. 8 Support bars and 2 support brackets in the cat/dog carrier backpack provide good support and do not deform and do not collapse. 2 side pockets, bowl/water/food/toys makes it easier for you . Eronomic Design: Our cat backpack carrier for large cats is 20 lbs (it fits a large cat). Shoulder and waist belts provide stability, equals the pressure and reduces the effect of skipping of pets in the bag. With this foldable dog | Cat carrier backpack, space savings and easy storage. 2 more suitable than the cat car for cats.