Recommended for 5 PoundsSmall Dog18 Pounds: Dog carrier backpack is designed for carrying small dogs. We strongly recommend it for puppies under 18 pounds (The larger dog may bring too much weight for the owner). If you are unsure about the size, you can contact customer service in advance. < p>Careful Design in Every Detail: Paw and tail hole design keeps your pet safe and comfortable. The hook-and-loop closure, zipper and elastic opening allow you to comfortably store your dog inside. Quick-release buckles at the end of the straps ensure quick one-handed installation. Customer Experience First: We always support our customers and do our best to meet your your needs. We have made several upgraded improvements, such as thickening the shoulder sponge, using upgraded breathable mesh and polyester fiber material, which makes the carrying bag more durable and comfortable. Two Ways to Wear: The hands-free pet bag can be worn on the front or on the back if you like, it brings you closer and increases the sense of security of your pet. your pet when transporting a cat or dog. At the same time, the thickened sponge cushion helps relieve the burden of your shoulder. Enjoy Travel with Pet: This backpack is lightweight and portable, you can use it for transporting small dogs or cats for biking, hiking, camping, walks or meeting friends. It allows owners and their lovely pets to have more adventures together. Plus, it's also a great photo prop for taking fun photos to share on a daily basis.