Excellent Material: The lens is made of high quality polycarbonate that can filter and reduce the intensity of UV, UV400, infrared and visible light. Protect your pet's eyes from snow, UV rays, wind, dust and fog. Adjustable strap: The adjustable strap is made of an elastic cotton strap, an adjustable elastic cord, which is suitable for different head shapes. This allows your pets to wear the sunglasses comfortably and securely. Good protection for outdoor activities: The dog goggles are good protection for your pet when you want to do outdoor activities with your pets such as skiing, climbing, swimming, etc. Sponge padding inside: sponge padding around the lenses, the high-density sponge is very breathable and its heat-regulating properties relieve the eyes and the pressure so that your dog feels comfortable. Size reference: headband size 8.6-15.7 inches. Suitable for small or medium-sized dogs, but not for large dogs. Please note: please measure your pet's size before ordering. Product details:Material: EVA + polycarbonate + nylon tape. Dimensions: 15 x 3.5 cm (L x W).Weight: 70 g.Headband: 20 - 40 cm (if loose).Chin strap: 16-26 cm (if loose). Package content: 1 x dog goggles. Please note: Please allow for slight size errors due to manual measurement. The error can be 1 - 2 cm.