Meets And Exceeds D.O.T. Safety Standards FMVSS 218. The Smallest D.Moisture Wicking Fabric Keeps Head Cooler and ComfortableNylon Y-Strap D-Ring Retention System With Sliding Adjuster. Nickel Plated Rolled Tubular
- Helmet Size Small: Head Circumference Inches-20 1/8″-21″ Head Circumference Metric-51.1-53.3 cm Hat Size-6 2/5-6 2/3
- Helmet Size Medium: Head Circumference Inches-21 1/8″-22″ Head Circumference Metric-53.7-55.9m Hat Size-6 5/7-7
- Helmet Size Large: Head Circumference Inches-22 1/8″-23″ Head Circumference Metric-56.2-58.4cm Hat Size-7-7 1/3
- Helmet Size XL: Head Circumference Inches-23 1/8″-24″ Head Circumference Metric-58.7-61 cm Hat Size-7 1/3- 72/3