1Nylon high elasticity can adjusted freely, quick adjustment, reduce resistance. 2Protective function, windproof, dustproof, sandproof, effectively protect your eyes and face. Detachable goggles with filter of breathing holes that allow maximum comfort and evenness. 3Innovative designed, TPU frame and PC sunglasses more gentle, high elastic nylon(elastic cord) can relieve the strain of the head, antireflective and durable. 4Detachable goggles and filtration device, easier to use, wear and tidy. 5Widely used, cool designed fits for modular or open face shield motorcycle, ideal for all people with largely compatible.