Chica Chihuahua will look great in this sleek leather material harness & leash set! And so will the little studly boys! Seven lucky colors to choose from: pink, brown, red, blue, black, gold and silver! The breakaway and quick release feature is designed to prevent injury if the harness and collar get caught on something. The harnesses come in small or medium sizes - see product size chart below. My Chica Chihuahua weighs 7lbs with a chest size of about 13" so she wears a Medium.