Vibrant Life Mesh Comfort Cat Harness One Size. Outfit your cat in the finest of feline fashion with this comfortable Vibrant Life Mesh Comfort Harness and Leash set designed for form and function for the larger kitty. Each harness has a design of its own so your pet is sure to stand out from the crowd. This harness fits most cats between 10-17 LBS Neck Size 9.5- 13 in (46-53 cm) and Chest Size 16 - 21 in (40-53cm). Be sure to check out the entire Vibrant Life collection for other cat collars and harnesses. Help your pets live the Vibrant Life! Our products are specially crafted with one goal in mind seeing your pet at its very best. With a variety of offerings designed to keep animals healthy happy and energized Vibrant Life stands out as the brand that truly puts your pet first.