Our dog goggles are made up of a soft TPE frame and 2 adjustable elastic straps. Lenses are ultraviolet rays resistant. Sunglass vents can send out vapor to your dogs. Wide goggles can stay in the dog's head pretty well, and provide a good view, the soft frame won't hurt the fur on the dog's face and eyes, and more comfortable for your dog to put-on. Never worry about your dog stick the head out the car window when you riding or driving outside because these sunglasses can prevent some little rock or something might hit the dog's eyes. Not only protect dogs' eyes from wind and sun in summer but also snowproof, anti-dust when skiing, running in winter. Head Elastic Straps: 16" -21"; Chin Elastic Straps: 7"-12" (No Tensile Measurement); Framebridge Perimeter: 12". Perfect for longe snout dogs like German Shepherd, Gree, Husky, Alaskan Malamute, Doberman, and Shepherd dog. Supplied with a zipper hard case nicely for storage so these sunglasses won't get scratched up sitting around, the exquisite pack also a great gift for the holiday.