Four Seven is a modern, progressive goggle with design details that recall Salomon’s heritage of innovation. Four Seven boasts a unique anatomical fit, wide field of vision, and a Sigma™ lens that amplifies contrast, enabling the eye to read terrain variations better, especially in very bright, sunny light conditions. Benefits:Amplified contrast and definition:- Salomon’s Sigma™ Lens technology amplifies contrast and visibility, especially in bright, sunny light conditions by boosting blue and red wave lengths.Wide field of vision:- Minimalist frame and modern goggle design ensures a wide field of vision.Visual acuity & glare reduction:- Salomon lenses ensure maximum visual acuity so you can see things sooner and react faster. Premium performance in every light condition.