Lens The lexan lens provides excellent levels of impact resistance and also creates a large, uninterrupted field of vision. The lens is kept in place with the extreme security of a nine pin retention system. The lens comes with a scratch resistant coating that keeps your vision clearer for longer. An anti-fog treatment then stops the lens from fogging up due to hot and humid conditions. Frame The frame has a super protective and sleek design that provides a firm structure to the goggle although super lightweight. Read more… The goggle’s frame is stabilised by an oversized 45mm wide strap that will fit round most MTB helmets and provides a tight grip to keep the goggles from sliding about even when travelling at speed.