Nylon Material: Our pet carrier bag is made of high quality nylon, which has high toughness, good elasticity, softness and abrasion resistance. Knitted mesh design on the surface, good breathability.It can be used in hot and cold weather. Furry friends can use soft material. for total comfort. Adjustable Design: The pet carrier is easy to wear. First loosen the harness, lie flat on the floor, place the harness under your pet's neck and chest and fasten the harness. The hamster leash is adjustable and can beadjusted to the size of the animal. LIGHT AND COMPACT: Our nylon pet leashes are lightweight. When the owner does not need to use the vest temporarily, the vest can be put into a pocket or bag, and its quick-release buckle can be quicklycarried on the animal, which is practical and fast. DESIGNED FOR SMALL ANIMALS: Suitable for rabbits, cats, guinea pigs, chinchillas, ferrets, hamsters, maintains animals' natural movement and improves your relationship with animals. Specification: Material:Nylon Blue color Size: S: neck circumference: 11-16 cm, chest circumference: 15-20 cm, back length: 9.5 cm The package includes: 1 * Pet Carrier and Leash Set