SUNVP Snowboard Helmet Integrated Adult Ski Winter Outdoor Snow Sports Helmet(Grey, L) Material: PC + EPS. Integrally molded ,lightweight and Eco-friendly. Size: M: 21.65''-22.84'' (55 ~ 58), Weight: 0.81lb, CE certification Adjust the size of the device: easy to wear a helmet, a unified regulator upgrade to high toughness materials, improve comfort, increase the safety factor Sweat chin pad: with a chin pad, fast absorbent, enhanced comfort, to prevent accidental injury. Detachable ear cotton , convenient for customers to clean Cap with jack: using imported Italian DuPont materials, and special situations encountered impact without breaking, to ensure the safety of the wearer.