Take extra safety precautions and invest in a pair of riding goggles to protect the eyes of your young riders on the trail. The frame is polycarbonate and the impact resistant Lexan lens is sure to keep dirt, water, sand and other material out of the rider's eyes. An elastic strap stretches to fit over the riding helmet, and high-density face foam provides a safe, secure and comfortable fit. Can be worn over glasses. Anti-fog treated.