Neither wind nor debris can stop you when you're wearing the Wiley X WX Arrow Sunglasses. The patented removable Facial Cavity Seal is made from soft, breathable open-cell foam and keeps wind, dust, debris, and peripheral light away from your eyes. In order to enhance your vision environment, the Arrow also features Top Down ventilation, which allows air to circulate and eliminates fog and condensation from obstructing your view. The frames are made of heavy-duty nylon that is extremely durable, but also light and comfortable enough for easy all day wear. Polycarbonate lenses are shatterproof, so you stay protected from every angle. A seamless hinge provides added durability and on/off ease. These sunglasses exceed ANSI Z87.1 High Velocity Protection standards, so you can feel secure in knowing your eyes are protected.