To measure the head size please use a measuring tape to measure the head circumference, the tape should sit above the ears and wrap around the centre of the forehead and around the back of the skull. The helmet should sit as low as possible and be a nice and snug fit this so that when riding the helmet will not shake the head around.


S S S S-M M M M L L L XL
EU (cm) 52 53 54 55 56 57 58 59 60 61 62
US (in) 6 ½ 6 ⅝ 6 ¾ 6 ⅞ 7 7 ⅛ 7 ¼ 7 ⅜ 7 ½ 7 ⅝ 7 ⅝
UK (in) 6 ⅜ 6 ½ 6 ⅝ 6 ¾ 6 ⅞ 7 7 ⅛ 7 ¼ 7 ⅜ 7 ½ 7 ⅝