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: L INCHES Inches: 22 3/4" - 23 1/2" CM: 58-60 Hat Size: 7 1/4 - 7 1/2 Sizing guide only. Head shapes can be unique, changing what size is needed.