Lens The lens has been purposefully designed to be extra-large and comes with Giro’s Expansive view technology to ensure that you get an extended area of optical clarity and protection. With a polycarbonate construction the lens is super durable and impact resistant. Also the lens comes with an anti-fog coating which stops the glasses from fogging up in hot and humid conditions. You can also keep your vision clearer for longer with compatible tear off systems. Frame The frame has a comfortable and protective design that is seamlessly compatible with Giro’s MTB full face helmets. The interior of the frame is coated in a layer of special, ventilated face foam that provides a cooling level of cushioning. The strap has been designed to provide a level of extra grip to ensure that the goggles stay in place even when you’re at your most active.