Oakley SI Ballistic M Frame Alpha Sunglasses Black Frame with Prizm Grey Lens ESS Sunglasses it is more durable

it is more durable

Heavy-duty pocket clip

they provide excellent noise reduction

Lightweight Frameless Design

Oakley SI Ballistic M Frame Alpha Sunglasses Black Frame with Prizm Grey Lens ESS Sunglasses it is more durableALPHA is an ecosystem modular and scalable to meet the unique demands of those who face the unknown. Whether a soldier is configuring a weapon or load carriage, versatility is key. Thats what inspired the ALPHA concept, a design that offers multiple configurations based on the mission and methods of infiltration. ALPHA is a three part system composed of a frame, gasket and goggle with a single lens working across all platforms. Features: Durability