The dog sunglasses are anti-fog, anti-UV, windproof, waterproof, and dustproof, preventing tiny particles from harming your pet's eyes. Suitable for outdoor activities: horse riding, driving, sunbathing on the beach, swimming, skiing, and other activities. Pets can wear these goggles; they won't affect their vision and protect their eyes. Adjustable elastic band. The goggles can be adjusted according to your pet's head size. They are sturdy and won't slip easily. Adjustable head strap size: 20-30 cm, adjustable chin strap size: 15-24 cm. Suitable for small and medium-sized dogs. Please measure your pet's size before purchasing. The goggles are suitable for small dogs or cats, such as Poodles, Bichon Frise, Short-haired dogs, Balinese, pug, shih tzu, etc.