Performance Technologies: Steel facemask for optimal field of vision and impact protection Windpact's Crash Cloud(TM) technology for impact absorption and dispersion Fleece bag included for easy transportation Certified by SEI to meet NOCSAE standards Sizing Guide: Fitted Hat Sizing: 6 1/2" - 7 1/4" (S/M), 7" - 7 3/4" (L/XL)