Very easy replacement thanks to magnet, ideal for twilight and cloudy days. High quality lenses with different coating on both sides (the mirrored coating on the outside of the lens reflects a greater amount of light, while anti-fog coating on the inside prevents fogging of the goggles) for a crystal clear vision, first class wind protection, UV400 protection, excellent anti-fog and anti-breakage system, improved scratch resistance, suitable for any winter sport.