Size: L Black Pet Carrier is designed to carry small dogs/cats and we highly recommend it for puppies under 15 pounds (larger dogs may put too much weight on the owner). Please be sure to measure your pet and choose according to the size chart. Thoughtful Details: Outward-facing legs and tail design keep your pet safe and comfortable; Velcro, zipper, and elastic openings allow you to comfortably place your dog inside; quick-release buckles at the ends of the shoulder straps ensure only one is needed Quick installation by hand. Thickened shoulder strap pad, with upgraded breathable mesh and polyester fiber material, makes the strap more durable and comfortable. TWO CARRYING METHODS: The hands-free pet carrier can be worn on the front or back if you wish, it brings you closer and increases your pet's sense of security when carrying your cat or dog. Meanwhile, the thickened sponge pad helps reduce the burden on your shoulders. ENJOY TRAVELING WITH YOUR PET: This backpack carrier is lightweight and portable, you can use it to carry a small dog or cat for biking, hiking, camping, walking, or meeting friends.