The popular Sport helmet just got better with the 2.0’s upgrades including a sturdy injection molded shell, a new matte finish and a sleek integrated visor. Now in XS to XL, this helmet pairs the largest size range in our line with an improved fit. With larger vents for more airflow, this all-purpose helmet offers comfort and performance at a great price. TECHNOLOGIES FINISH: Matte FIT SYSTEM: Pad inserts HEADLINER: Removable and washable VENTILATION: Multiple vents CERTIFICATION: ASTM/SEI-certified SIZE: M Inches: 22" - 22 3/4" cm: 56-58 Hat Size: 7 - 7 1/4 Size chart is a guide only. Head shapes can be unique, changing what size is needed.