Escape Proof Cat Harness with Leash Adjustable Soft Mesh - Best for Walking Size S: Chest girth: 10.5"-12.1", Neck girth:7.0"-8.7", Leash size:59" (150cm). The baby's special soft Velcro is used in the neck and chest, a plastic closure is added to the neck to prevent the cat from escaping after get rid of the Velcro. The harnesses are made with easy-to-secure Velcro, which makes outfitting your cat simple. its a soft mesh material that doesnt suffocate nor overheat her when hot. Two heavy D rings connect you and your pet when you are in walking, running, jogging or hiking. Take your cats girth measurement snug against her fur, and then add 2 inches to 3 inches to that measurement for comfort.