The Oakley SI Ballistic M Frame Alpha sunglasses are part of a modular eyewear system designed for maximum versatility and protection. These sunglasses feature a single lens that works across multiple platforms, including a frame, gasket, and goggle. The Plutonite® lenses offer 100% UV protection and meet ANSI Z87.1 and MIL PRF-31013 standards for impact resistance. The lightweight O Matter™ frame and Hydrophilic Unobtainium® nose pads ensure a secure and comfortable fit, making them ideal for military and tactical use.