A high contrast polarized brown base lens boosted with ChromaPop color enhancement technology that is optimal for in-shore water environments in medium to bright sunny days. This lens is built from scratch resistant optical grade mineral glass. Provides 100% protection from harmful UVA/B/C rays.Fighting your catch in open water or standing waist deep in a mountain stream, the Smith Hookset sunglasses are the ones you grab to see below the surface. Because glare is every angler's adversary, we made them with a variety of lens options, all with glare-cutting polarization that enhances contrast and depth perception. Minimal bottom rims keep moisture from pooling up, while no-slip nose pads ensure they stay comfortably in place until the sun sets.