The Lightshifter semi-rimless frame keeps the sunglasses aerodynamic and provides an unobstructed field of vision. Keeping your vision clear the lenses are also protected with additional treatments including anti-fog, anti-scratch and an oleophobic layer. The half-rim frame is sculpted for a smaller fit with adjustable temples and nosepiece. The temples and nosepiece are coated in Thermogrip to ensure extra stability – keeping the frame positioned against sweat, moisture and intense movement. TNS ICE Cat 3 Lens Tint Base: Gray Light Transmission: 13% The TNS Ice lens delivers 100% UV protection. The classic polycarbonate lens also provides impact protection, while the gray tin helps maintain natural color perception.