S4 Optical Armor is a defense system in optics. S4 lenses are Polycarbonate, Shatter Proof, Lightweight and Scratch Resistant with 100% UV protection and an optically correct De-centered vision field. S4 Xglare? Polarized lenses are a unique 7 layer, press polished 1.1mm Xglare? polarized lens with high impact resistance. Frames are a durable nylon and polymer resin for a comfort fit Geometry frame.
- Polaris, Surge & Indie are Xglare? Polarized.
- Spike has a wire frame with rubber nose and ear piece.
Charles River Apparel