Pet Dog Glasses Waterproof Sunglasses Eye Protection Windproof For Large Medium DogPet Dog Glasses Waterproof Sunglasses Eye Protection Windproof for Large Medium DogEye protection: waterproof, windproof is an effective way to protect pets' eyesCool Design: Special shaped pet glasses with black frame and clear lenses are very cool for dogsProduct material: PC lens + PVC nylon strap frame, the frame material is not easy to breakProduct color: clearHead circumference: 36-56cm (measurement without stretch adjustment) Jaw: 20-25cm (measurement without stretch adjustment) There are vents to let the air circulate inside the glasses and prevent the generation of water vapour.Vent hole position It conforms to most dog faces, can be bent moderately, and has strong toughness.Adjust the bridge of the nose The tow rope is carefully woven with eight-strand nylon, the production result is safe and reasonable, the pulling force is more powerful and durablePackage Included: 1 x Dog GlassesNote:Colors might be different due to different monitor display.Please allow slightly difference in size due to manual measurement.