This listing is for a dog carrying backpack. This is a medium size backpack for smaller dogs. This backpack is designed to hold dogs from 8 to 12 lb. There are many adjusting straps to Taylor fit this backpack to your dog. It has four holes for the legs , one hole for the tail and is open at the top for the dog's head. Please see photos of measurements to confirm that this will work with your dog. This backpack is also suitable for use with large cats. This is a new backpack it has never been used. Upon purchasing, this item will be shipped the same day.