This pet backpack measures 13.0" L x9.8" W x16.3"H, making it ideal for carrying dogs up to 7-10 lbs or cats up to 7-15 lbs. It comfortably accommodates small to medium-sized cats and small dogs/puppies. The travel carrier backpack features four breathable mesh windows on all sides, providing plenty of air for your pets. It allows you to easily observe your pets while they enjoy the scenery outside. The travel bag backpack offers multiple ways to let your pet in and out easily. The pet cushion inside the bottom of the bag has a removable, washable cover, ensuring your furry friend has a comfortable spot to rest while on the go.