MK8 Evolution

High-Density Polyethylene (HDPE) Shell, Meets and Exceeds ANSI/ISEA Z89.1-2009 Standard for Type II, Class E, Universal Accessory Slots, Deluxe Polyester Textile Strap Suspension with microfiber crown pad webbing, Also offers Side Penetration Protection in addition to crown penetration, Offers Side (Lateral) Impact Protection which reduces the force of impact resulting from a blow which may be received off center as well as to the top of the head, Wheel Ratchet Adjustment allows user to easily adjust fit while wearing, Download complete text specs and details, Expanded Polystyrene (EPS) Impact Liner helps absorb the forces of impact,