Lenses are made of high-quality aeronautical PC material with wind, dust proof, and UV 400 protection features, and there is thick foam inside the ski bike glasses' frame to ensure your eyes will get 360 Scientific design with an adjustable stretchy strap and flexible frame make these motorcycle goggles fit all people, women, men, kids, girls, and boys. It is also compatible with most helmets, just enjoy it with your friends or family. Double-layer lens design and high-performance hydrophilic coating on the inner side minimize the chance of fogging. Venting windows at both sides generates efficient air circulation to further ensure fog-free vision.