SIZE: Glass width: 16cm, height 8cm; COMFORTABLE TO WEAR: Our dog goggles are separately formed by uvioresistant PC lens. The edges of the optical frames are covered with a circle of rubber and plastic cotton, which allows your dog to wear the goggles more comfortably. All in all, these materials are proven to be lightweight, soft and durable. ADJUSTABLE STRAP: The strap of the dog goggles turns out to be elastic and flexible, so the length can be adjusted according to your dogs size. In particular, it is suitable for large breed dogs. The head strap and the chin strap enable your dog to wear the goggles more firmly because the strap is not easy to fall off. PROTECT YOUR DOGS EYES: Our dog goggles can provide a better vision for your dog. More vitally, the soft optical frames wont do harm to your dogs face and the fur of your dogs eyes. The goggles can make your dogs eyes stay away from ultraviolet, wind, snow, debris or dust. It is way applicable to middle-large size dogs such as Alaskan malamute, Samoyed, Labrador and Border collie.