Soft Foam Cushion - The foam padding in these pet sunglasses is comfortable and skin-friendly. The spacious internal structure and ventilation hole design perfectly relieve eye fatigue and pressure. They can effectively prevent water vapor generated when wearing glasses, so the dog will not experience any discomfort after prolonged use. The fully enclosed dog goggles completely protect your pet's eyes from damage caused by UV rays, wind, dust, and sand. Lightweight Material - The glasses frame is made of high-quality PC plastic and the lenses are made of AC resin; durable, lightweight, and comfortable. The lenses with anti-UV coating protect your pet's eyes from the sun at all times. Size: Headband - 33-43 cm, Chin Strap: 18-25 cm (no tension measurement), pet sunglasses are very suitable for small dogs. If you are new to dog sunglasses, you need to train and use treats to get your dog used to them. Elastic Straps - Adjustable elastic straps can be customized to fit different puppy breeds and small dogs. The flexible headband and chin strap can be adjusted and tightened to ensure the dog's sunglasses fit perfectly. You never have to worry about them falling off easily. Wide Range of Use - pet sunglasses are perfect for everyday use. Dress your pet in a striking, elegant, and glamorous way, making them more fashionable during walks, swimming, and motorcycle rides.