Size Reference - XS (Neck Girth: 8.5” -11”, Chest Girth: 13.5” - 16”), S (Neck Girth: 11” - 13.7”, Chest Girth: 18” - 20”), Please measure your cat and refer to the size chart first before ordering. Your cat's head circumference should be at least 10 inches otherwise your kitten may slip out. If your cat is between sizes, please choose the smaller size. Super Soft & Breathable Material - Made of lightweight, soft, breathable air-mesh fabric, with soft edge and sponge cushion which can prevent injuries and provide good protection and perfect comfort. This cat harness can be used in all seasons, regardless of the hot or cold weather. The non-stick hair lining and breathability allow you not to worry about cat skin problems Bright Reflective Strip & Sturdy D-rings - Reflective strip makes cat visible in low light conditions and improves safety when walking at night. This outdoor kitten harness features a sturdy D-ring on the back to attach to leash. It can evenly distribute the pulling pressure of leash across the chest and shoulders, which is less pulling pressure on your pet's fragile neck. Lightweight and no pressure allowing them to play more freely and lively