Features: * Adjustable non-slip head and chin straps. * Padded soft sponge frame. * Anti-UV coating material on the lens. * Sunglasses resist UV, wind, water and dirt for pets. * Protective goggles for medium/large dogs. How do I wear dog glasses? 1.Distinguish the head and chin strap according to the picture. 2.Wear the head and chin strap in the correct position for your pet. 3.Adjust the strap to the head circumference and chin of your pet. Package contents: 1 x PETLESO dog gogglesPackaged in a delicate box, convenient to storage. dog goggles are best choose for everyday wear, take picture, party, make your pet more dazzling, unique and glamorous, when climbing mountains, walking, riding , or driving, it can also prevent wind, rain, snow and dust for dogs. Head strap 13.4”-20”, chin strap 6.3”-9.5”, special elastic straps, which can be apply to the most medium to large dogs, when wear goggles for your pet, please adjust the straps to avoid slipping off. Adjustable elastic straps and chin straps to fit different head shapes, and provides a very stable fit on your dog; one on side that goes behind the ears and one on the bottom that goes underneath the chin, which keeps the goggle from moving around even when your dog shakes body. PETLESO dog goggle is made of soft TPU frame and 2 adjustable elastic straps, the soft sponge around the frame will be comfortable and the lens won’t close to your dog’s eyes; no pressure to wear, pet will get used to sunglasses in soon. Perfect for dogs who like riding car, hiking, outdoor activities or have eye diseases. PETLESO dog sunglasses provides positive protection against UV, wind, and debris. frame vents avoid internal lens fog.