A true "hybrid," the SG-1 can be worn as highly functional tactical goggles or sunglasses, depending on your situation and the level of protection needed. Their universal fit and NVG-compatible design features removable temple arms that can be replaced with an adjustable strap for an extra-secure fit. The changeable lenses and lightweight frame meet safety standards for clarity, ballistics, and high-velocity projectiles, and are equipped with a facial cavity seal that protects eyes from dust and other irritants.