Sport: Winter sports The set includes: protective caseA multi-color REVO coating on the outer side of the lens provides additional sun protection by reducing the amount of light that enters the eyes.The Anti-Fog cover reduces fogging up due to temperature changes.Scratch resistant lensThe goggles comply with the European EN 174 norm regarding the personal eye protection. Double cylindrical lenses provide adequate contrast and reduce fogging up.The vents in the frames feature a thin padding and provide free air circulation between face and goggles An elastic, silicone backed strap keeps the goggles in a right position. An elastic, adjustable strap allows a comfortable fit Thermoplastic polyurethane frames guarantee weather resistance Soft, 3-layer velour foam padding adapts to face contours and thanks to its close fit provides a shield against wind and snow. The vents in the lens provide free air circulation and prevent excessive fogging up. Category: S2 (cloudy days / light transmission: 18-40%)