It focus on researching pet supplies, these small dog sun goggles are authorized by it, which made of sturdiness piece frame lens, 2 adjustable elastic straps, durable and sturdy. Our small dog sunglasses accord with UV rate standard, lenses are UV-resistant and anti-glare. PC lens with bright black coating, but lens translucent also a great vision. Puppy glasses with inner soft pad to make your dog comfort to put-on, relieve wearing pressure. Cozy frame fit the skin well without scraping dog's face and eyes. Prevent droplets, tiny stone into dog eyes when dog head out window on car. Protect dogs eyes when they runing, skiing, traveling. Great for small dogs like Shih Tzu, Multipoo, Yorkie, Poodle, Small Schnauzer, Teddy, etc. or adult cats. Not recommended for tiny/mini dogs like mini chihuahua, mini doberman. Length: 4.5". Height: 1.3". Head elastic strap adjustable: 13"-17", Chin elastic strap adjustable: 7"-10".(No Tensile Measurement) Adjustc straps after putting on to avoid glasses slipping off and hurting dog eyes.