Lifeunion Funny Cool Pet Doggie Motorcycles Bike Helmet Cap Hat for Sun Rain Protection,Great Birthday and Christmas Gifts for Small Medium Cats Dogs Made of high quality ABS material.Designed with your pet's safety and comfort. Protect pet's head from the sun, wind and irritant objects. Meets FMVSS 218. Excellent for the pet that requires protection from minor trauma. Light weight, Padded inside and come in with adjustable chin strap. Small size fits a Dog head with Width of head 4" and Circumference 9-11" Made of high quality ABS material Eyes attracting color,make you pets cool Come with adjustable chin strap, will not be easily lifted off Excellent for pet that requires protection from minor head trauma Sponge padded inside,give your lovely pets more comfortable trip Can effectively protect pet&#039;s eyes from sun rays and add a stylish appearance for your pets S: Circumference: 12.3&#034;, Wide of Head: 3.9&#034;, Deep: 2.2&#034; M: Circumference: 15.4&#034;, Wide of Head: 4.9&#034;, Deep: 3.0&#034; L: Circumference: 18.4&#034;, Wide of Head: 5.9&#034;, Deep: 3.5&#034;