The ESS Rollbar Terrain Tan Sunglasses with Interchangeable Lenses feature an auto-locking Rollbar Lens Gate so you never have to worry about your safety. Rollbar Terrain Sunglasses are made from military grade materials that are designed to handle toughest conditions. ESS interchangeable lens system allows you to quickly and easy swap between gray and Clear lenses, which each offer ANSI rated impact protection and block 100% of UVA/UVB. With a larger frame and low-drag temple arms that don't interfere with communication equipment, hearing protection, or hats or helmets, Tan Rollbar Terrain Sunglasses are ideal for military service members.