The Sinner Emerald is a high-quality snow goggle with an quick lens change system. The soft multi-layer foam on the inside provides an excellent fit and ultimate comfort. The sophisticated ventilation system of the lens and the anti-fog coating prevent the lens from fogging up. For a perfect fit to the helmet, the Emerald is equipped with an adjustable anti-slip strap and an extension system. Double Full Blue Lens This lens is suitable for sunny and slightly cloudy days.Filter category: 2Transmittance of visible light: 15 %FeaturesDouble spherical lensAnti-fog and anti-glare coatingLens ventilation Multi-layered and dense face foamHelmet compatibleNon-slip silicone strapCantilever system