A S-One Lifer Helmet in Black Matte with Cyan Straps and a cyan "S1" logo on the side.
Sizing guide for the S-One Lifer Helmet in Black Matte with Cyan Straps, featuring a diagram of the helmet's interior that highlights the use of EPS Fusion Foam. Includes a chart correlating head sizes with corresponding helmet sizes.
A Black Matte S-One Lifer helmet with cyan straps and the "S1" logo in blue.
A black matte S-One Lifer helmet featuring cyan adjustable straps and ventilation holes, viewed from the front.
Interior of the S-One Lifer Helmet / Black Matte/Cyan Straps showing a compliance sticker with AS/NZS 4330:2020 certification issued by BSI Benchmark.

Description

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

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.

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

S-One Lifer Helmet / Black Matte/Cyan Straps

Brand: S-One Helmets SKU:

$64.00 USD

Or 4 payments of $16.00 USD with

Colour - Matte Black/Cyan Straps

Size - XS

S-One Lifer sizing

S-One sizes the Lifer by nominal head size in inches. Each helmet ships with three liner thicknesses, so every size has about an inch of adjustment built in.

SizeHead circumferenceNotes
XS51–52cm20.5" nominal
S52–53.5cm21" nominal
M53.5–54.5cm21.5" nominal
L54.5–56cm22" nominal
XL56–57cm22.5" nominal
XXL57–58.5cm23" nominal
XXXL58.5–60cm23.5" nominal

Same shell for the Lifer, Retro Lifer, Retro Lifer E-Helmet and Lifer Visor. Between sizes? S-One says go larger and use the thinner liner. Under 51cm look at the Mini Lifer; over 60cm the Mega Lifer.

How to measure

Wrap a soft tape measure around the widest part of your head, about 2.5cm above your eyebrows and just above your ears. Keep it level and snug but not tight, and read the number in centimetres.

No tape measure? Use a piece of string or a shoelace, mark where it meets, then measure the string against a ruler.

Between two sizes? Most helmet brands recommend the larger size and using the thicker set of pads. A helmet should feel snug all round with no pressure points, and shouldn't rock when you shake your head.

Read the full buying guide

S-One Lifer sizing

S-One sizes the Lifer by nominal head size in inches. Each helmet ships with three liner thicknesses, so every size has about an inch of adjustment built in.

SizeHead circumferenceNotes
XS51–52cm20.5" nominal
S52–53.5cm21" nominal
M53.5–54.5cm21.5" nominal
L54.5–56cm22" nominal
XL56–57cm22.5" nominal
XXL57–58.5cm23" nominal
XXXL58.5–60cm23.5" nominal

Same shell for the Lifer, Retro Lifer, Retro Lifer E-Helmet and Lifer Visor. Between sizes? S-One says go larger and use the thinner liner. Under 51cm look at the Mini Lifer; over 60cm the Mega Lifer.

How to measure

Wrap a soft tape measure around the widest part of your head, about 2.5cm above your eyebrows and just above your ears. Keep it level and snug but not tight, and read the number in centimetres.

No tape measure? Use a piece of string or a shoelace, mark where it meets, then measure the string against a ruler.

Between two sizes? Most helmet brands recommend the larger size and using the thicker set of pads. A helmet should feel snug all round with no pressure points, and shouldn't rock when you shake your head.

Read the full buying guide

S-One Lifer Helmet / Black Matte/Cyan Straps - Matte Black/Cyan Straps / XS

$64.00 USD

Price match request

$12.99 flat-rate shipping Australia-wide

Express from $21.99

Free in-store pickup - Brisbane

Availability

Matte Black/Cyan Straps
XS
S
M
L
XL
XXL
XXXL

● In stock at LUXBMX ● With supplier ● Preorder ○ Sold out

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