Small Dogs and Cats:The larger dog may bring too much weight for the owner, we strongly recommend puppies under 18 LB. Please measure your pets and choose according to the size chart. Detail-oriented design: Leg and tail design keeps your pet safe and comfortable. Hook and loop, zipper and elastic openings allow you to comfortably fit your dog inside. Quick-release buckles at the end of the straps ensure quick, one-handed installation. or Back: A hands-free pet carrier can be worn on the or back if you want, it keeps you closer and increases your pet's sense of security when carrying your cat or dog. Portable Pet Carrier:This backpack carrier is lightweight and portable, you can use it to carry small dogs or cats for biking, hiking, camping, walking or meeting friends. It allows owners and their lovely pets to have more adventures together. Essentials for taking photos:Our adjustable pet backpack is a great photo prop for taking fun photos to share daily. Made of durable, sturdy and hard-wearing nylon.