The CLK goggle is named after Dye•_Õs innovative 'click' lens attachment system that allows riders to change their lens in seconds with the click of a hidden button. Lens changing has never been easier! The CLK is a large fit frame, which features an expanded field of view, optimal helmet integration, and strategic venting that allows maximum breathability. Spherical lenses present the highest optical quality, and provide 100% UVA, UVB, and UVC protection further enhanced by Dyetanium and 4D coating, which balance light transmission, stop glare, and eliminate fog. It just clicks.