Indoor cat always feel full of curiosity about the world, they longs to explore life beyond the windowsill. Have this cat harness, you cat can walking, running, training or exploring the outside world with no dangerous! If your cat is between sizes, please go for the smaller size ...Indoor cat always feel full of curiosity about the world, they longs to explore life beyond the windowsill. Have this cat harness, you cat can walking, running, training or exploring the outside world with no dangerous! If your cat is between sizes, please go for the smaller size.This harness is not meant for newborn babies or small kittens.The harness should be snug enough for you to fit ONE finger between the straps and any part of your cat's body.