FREE Smoke Shield w/ Purchase!! Snell M2010 DOT Approved Full Face Helmet ( Large - White ) Great value on a Snell M2010 helmet that includes a FREE smoke tinted shield (standard clear also included) Sculpted aerodynamic shell offers a lightweight and sleek design Comfortable interior with removable & washable liner For more clear and mirrored shields, search "Typhoon Snell Visor" Please measure for size. Each manufacturers sizing is different. SIZE CHART (Circumference of the largest part of your head, usually just above the eyebrows) in inches MEDIUM: 21  to 22, LARGE: 22 to 22 , XL: 22  to 23, XXL: 23 to 23 . Head shapes can affect how a helmet fits. The size chart is meant to be a starting point.