Triple 8's Sweatsaver Helmet

To ensure a perfect fit, measure the circumference of your head starting in the middle of your forehead and match it with the sizes below: 

S 20.60 – 21.30 in (52 – 54 cm) 

M 21.40 – 22.00 in (54 – 56 cm) 

L 22.10 in – 22.90 in (56-58cm) 

XL 23.00 – 24.00 in (58 – 61 cm)