The KEP Italia Matt Helmet is designed and made in Italy. This matt covered helmet is truly one of the safest and lightest helmets on the market today. KEP Helmets are made with the optimum materials and a unique patented air flow system. They combine all areas of performance, safety and unparalleled comfort for the rider. The "Air Control System" of ventilation works through the opening and closing of the front grille where airflow is controlled by a central switch that moves up and down. Worn by top riders in the USA and across the globe, KEP Helmets provide ultimate protection and comfort, combined with true Italian quality and elegance. SEI Certified: ASTM F1163.04a INNER LINING The inner pad is removable and washable and can also be replaced or changed for a different size - replacement linings are sold separately. It is attached to an anatomic cushion that perfectly fits the nape ensuring optimum comfort and absolute air diffusion thanks to the high-tech materials used: Coolmax coupled with open-cell filters and smooth micro-fiber SIZES There are two shell sizes: M and L. Inner linings for the M size shell run from 51-58 and inner linings for the L shell run from 59-62