Material: The frame of these pet dog waterproof sunglasses is made of soft and elastic PVC, and the lenses are made of PC, light and stress-free to wear. Suitable for most face shapes of dog, it can be moderatelybent and has strong toughness. Size: head size is 36-56cm/14.17-22.05", chin size is 20-25cm/22.04-9.84". The dimensions of the lens are approximately 21.5 x 7.5 cm / 8.46 x 2.95 inch. Protect Your Pet's Eyes: These waterproof pet sunglasses can protect your pet's eyes. It is shatterproof, anti-fog, windproof, anti-UV, shatterproof and waterproof. It is also suitable for dogssuffering from eye disease or sensitive, which can protect pet's eyes from strong external light stimulation. Adjustable Elastic Bands: These waterproof pet sunglasses have two adjustable elastic bands and a special elastic cord with ventilation holes to allow air to circulate inside the glassesand prevent the generation of water vapour. The straps of the sunglasses can be adjusted to your dog's size, making them easy to wear. Fashionable Piece: The dog sunglasses are suitable for daily wear, photo shoot, party, wedding and vacation. Dress up your dog to make him more striking, elegant and charming. These waterproof sunglassesfor pets are also perfect for your pet to wear while walking, swimming, biking or driving. Glasses for dogs are not only waterproof, they also protect against the sun in summer and wind and snow in winter. Provides anti-fog function to resist UV/wind/water/debris damage. specification Material: PVC frame with PC lens + nylon strap. Dimensions: 21.5 x 7.5 cm / 8.46 x 2.95 inches Quantity: one the black