Outdoor Sports Helmet for 52-58cm Head Adult/Kid | Ski Cycling Roll Skate Safety
Note: We provide two sets of liners: 12mm thick liner is designed for 52 - 56cm head circumference, 8mm pads for 54 - 58cm head circumference. 52 - 56cm / 20.5 - 22.0in (use 12mm liner); 54 - 58cm / 21.2 - 22.8in (use 8mm liner).