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

Now 2 FREE SIZING KITS with ANY S-One Helmet purchase! You’ll never have to guess a size again, making them the perfect hassle-free helmet option!

Just add your helmet to your cart and the free offer will pop up for you in the cart!

We recommend checking the sizing below / off S-One’s top notch sizing chart, then selecting the sizing kits above and below the helmet you’re ordereing.

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.

Features:
– Multiple and high-impact EPS Fusion foam
– Deep Design
– Sweat absorbing liner
– Lightweight construction
– High impact ABS outer shell