Easily transition from sunglasses to goggles with Frank Bee Tactical Interchangeable Optical System. The smoke lenses have UV400 protection to guard against harmful sunrays, and are anti-fog and anti-scratch coated to keep your lenses clear and clean. To switch from goggles to sunglasses, simply remove the elastic strap with the end clips, and attach the bayonet temples on each end. The interior side of the sport goggles feature foam padding for long-lasting comfort while in the field. The adaptable tactical goggles are ideal while in the field, hiking through the wilderness, or performing other outdoor activities.