The S-One Lifer Helmet is the best fitting, high-impact and multi-impact Australian-certified helmet on the market.

Check out the liners here: S-One Helmet Liner Kits

Sizing: S: 53.5cm (21″)
M: 54.5cm (21.5″)
L: 56cm (22″)
XL: 57.5cm(22.5″)
XXL: 58.5cm (23″)
XXXL: 59.5cm (23.5″)

How to measure:
Use a soft tape measure to measure the circumference (around) of your head and an inch (2.54cm) above your eyebrows. Keep the tape level front to back. If you don’t have a measuring tape, use a piece of string or shoelace, then lay it out on a table and measure it with a ruler.

– Multiple and high-impact EPS Fusion foam

– Deep Design

– Sweat absorbing liner

– Lightweight construction

– High impact ABS outer shell