SPECIFICATIONS SIZING S 51-56 cm 20-22" M 55-59 cm 21.6-23.2" L 58-61 cm 22.8-24" As with all other HJC helmets, the inner padding is removable and washable, keeping things clean and your head cool. The Helmet is also equipped with more classic features such as: adjustable occipital cradle, goggle mount, strap splitters and antibacterial X-Static pads.