These are a front pack style carrier for any type of pet 25 pounds and under. Developed to cater to motorcycle and bicycle enthusiasts these specialized designs are available in a variety of sizes to fit your pet. It can also serve as a dual purpose; it can be attached to a car seat for your pet to ride safely in your vehicle, holding the pet securely in the seat. The front-pack carrier is held very securely against your chest with adjustable straps of nylon webbing that extend from the front of the carrier, over the pet's shoulders, over your shoulders, cross behind our back, then forward and buckle into each side of the carrier. Your pet is provided excellent back support.