Sunglasses Design: The pet safety glasses consist of high quality anti-UV lens and sponge frame. The sponge frame is soft and breathable which will not put pressure on the pet’s eyes. Eye protection: Namsan dog sunglasses are windproof, waterproof, UV protection, snow protection, suitable for cats and small and medium-sized dogs. Cool style: it is suitable for riding outdoors, enjoying the sun on the beach, swimming, skating, etc. Almost a pet can wear it and protect the pet’s eyes from dust. Adjustable straps: According to the size of the pet’s head, you can adjust the glasses, not easy to slide. Size: Adjustable range of head straps: ≤12"(≤ 30cm), adjustable range of chin straps: ≤8.5"(≤21.5cm), suitable for small and medium sized dogs, please measure the pet’s size before purchase.