The Require offers a classic look and is made from high performance materials. The Grilamid frame with manually in-molded hinges is lightweight, flexible, and durable and the hydrophilic rubber stays grippy even when wet, so the glasses will stick to your nose when you move, regardless of rain or transpiration. The durable nylon lenses from Carl Zeiss Vision provide outstanding optical performance. Available with a tint specifically developed for best contrast in an urban environment and with transmission peaks to make sure traffic lights and car lights are highlighted.