The pro-level and premium Kask Protone Helmet was developed with Team Sky riders for fit, comfort and protection on hard days in the saddle. In particular, the Protone incorporates a unique hinged adjustment system that allows for both size and up/down adjustment, which together comfortably cradle the nape of the neck. The helmet size can be adjusted using either the dial or finger push system. Working together, these features give the helmet a superior fit and deliver a feeling of improved security that is quite unlike any other helmet. Unsurpassed ventilation is achieved by means of large air vents, a design feature made possible by the reinforced helmet frame - all delivered without any compromise to the safety or aerodynamic qualities of the helmet. The internal pads are made from KASK's 3D Dry system which draws perspiration away from the head and these pads are removable and washable. Nylon thermo fixed straps, have soft lateral spacers where these straps are in contact with the skin, giving excellent ventilation and comfort along with the soft leather chin strap. Reflective stickers on the back of the helmet provide better visibility in the dark. Meets the American CPSC certification for safety. Made in Italy. 250 grams. MD (52-58cm) or LG (59-62cm).