1.Resilience testing Meets most cat and dog facial shapes, can moderately bend, and has strong resilience2.Adjusting design Both the head and chin are equipped with precision elastic webbing, which is easy to adjust and makes it very comfortable for dogs to wear3.Sponge design The frame is surrounded by sponge, so dogs will not feel uncomfortable when wearing it normally4.Our puppy sunglasses are UV-compliant with UV-resistant and anti-glare lenses.The PC lenses are coated in glossy black, but the lenses are also visually appealing in their translucency.5.Comfortable frame is perfect for the skin and won't scratch your dog's face or eyes. Prevents flying droplets and small stones from getting into the dog's eyes when the dog sticks his head out of the car window. Protect your dog's eyes when running, skiing, travelling.