The KASK Protone Icon is a premium cycling helmet designed to balance aerodynamics, ventilation, comfort and protection for demanding road rides. Its redesigned internal structure and seamless shell construction create a clean aerodynamic profile, while the OCTOFIT+ adjustment system provides a secure and customizable fit. Although particularly well suited to road cycling, KASK also designed the Protone Icon for gravel, cyclocross and cross-country riding. OCTOFIT+ Comfort & Aerodynamic Design The OCTOFIT+ system uses an ergonomic rear stabilizer and large rubberized adjustment dial to improve stability and make fit adjustments easy while riding. Inside, removable and washable CoolMax padding helps manage moisture and maintain comfort during long or high-intensity rides. A reflective rear insert adds visibility, while KASK's reinforced internal frame is designed to improve structural integrity in the event of an impact. What sizes does the KASK Protone Icon come in? KASK lists three sizes: S (50–56cm), M (52–58cm) and L (59–62cm). Does the KASK Protone Icon use MIPS? KASK does not use MIPS in the Protone Icon. Instead, the helmet has been developed and tested according to KASK's own Rotational Impact WG11 Test protocol. Is the Protone Icon only for road cycling? No. KASK positions the Protone Icon for road, gravel, cyclocross and cross-country mountain biking.
