KABUTO Bicycle Size Matte Black CANVAS-SMART Helmet, M/L (Head Circumference 57-59cm),

Recommended by the JCF (Japan Cycling Federation). Size indication (reference weight): M/L (270g) *Reference weight without shield attached (AR-5 shield reference weight: 39g) Head circumference guideline: 57-59cm Shield equipped to avoid interference with eyeglasses. Convenient dial-type adjuster