Answer Racing - AR1 Solid HelmetThe AR1 helmet is Answer's best value helmet ever. A dual density EPS liner helps to absorb both large and small impacts while a highly developed ventilation system consisting of two large intake ports and four large exhaust ports help keep you cool in the hottest conditions. Specifications Shell made of injection molded Acrylonitrile Butadiene Styrene (ABS) Sculptured, dual density, EPS impact absorbing liner Removable washable liner is made with