Lens The lens is Lexan to give you a superior vision while also protecting from scratches and abrasions. The lens are then treated with anti-fog to keep your vision from clouding up when you overheat or the environment is moist. Comes with the SVS system that allows you to add another layer of protection to the front of your lens for amazing vision clarity. Frame The Strata SVS junior frame is made of urethane which is a material that is flexible and extremely robust making it perfect for absorbing high impacts and protecting your face. Read more… The frame is curved to form a more comfortable fit and comes with a double layer of face foaming cushioning that is also moisture managing so that the goggles don’t slide in rain or when you sweat. The strap is a thick 40mm silicone coated strap that is adjustable to fit multiple sized heads and helmets.