●Eye protection: waterproof, windproof and UV protective goggles Namsan is an effective way to protect your pets eyes ●Adjustable strap: the strap of the dog sunglasses is adjustable, easy to wear ●Cool design: the pet safety goggles made with black frame and splinter lens, it is very cool for dogs ●Material: Nansam sunglasses lens are made of high-quality polycarbonate, which can reduce UV radiation, the material of the frame is not easy to break ●Scope of application: adjustable range of head adjustment strap: ≤22.8 inches (≤ 58 cm), adjustable range of chin adjustment strap: ≤8.4 inches (≤ 21.5 cm), suitable for medium and large dogs. Please measure the size of your pet before purchasing.