Superior toughness TPU frame and PC Lenses are almost unbreakable,so your face can get better protection. Patented side buckle make user more convenient to replace the strap. Super soft foam have Stronger buffering capacity,more comfortable ,more fit. Flow-Tech Venting designed to reduce fogging and optimize flow of air over inside of lens Helmet compatible design and Double Layer Face Foam with micro fleece facing.Elastic belt strap made of nylon fiber, 45mm width and about 660mm in max length