Helmet Size Guides

Getting the right sized helmet is crucial!

Don't gamble with your safety.

Measure around your head

If you haven't got a flexible measuring tape use a piece of string or shoelace! You want to make sure this measurement is as accurate as possible.

100% Status

Adult Size: Inches, Centimeters
XS: 20 7/8 – 21 1/4in, 53 – 54cm
SM: 21 5/8 – 22in, 55 – 56cm
MD: 22 1/2 – 22 7/8in, 57 – 58cm
LG: 23 1/4 – 23 5/8in, 59 – 60cm
XL: 24 – 24 3/8in, 61 – 62cm
XXL: 24 3/4 – 25 1/4in, 63 – 64cm


Youth Size: Inches, Centimeters
SM: 18 1/2 – 18 7/8in, 47 – 48cm
MD: 19 1/4 – 19 5/8in, 49 – 50cm
LG: 20 1/8 – 20 1/2in, 51 – 52cm

Bell Sanction

SIZE: CM, IN
XS: 48-51cm, 18 7/8" – 20 1/8"
S: 52-54cm, 20 1/2" – 21 1/4"
M: 55-57cm, 21 5/8" – 22 1/2"
L: 58-60cm, 23 1/4" – 24 5/8"

Bell Sanction V2

SIZE: CM, IN
XXS: 48-51cm, 19" – 20 1/8"
XS/S: 51-55cm, 20 1/8" – 21 5/8"
M: 55-57cm, 21 5/8" – 22 1/2"
L: 57-59cm, 22 1/2" – 23 1/4"
XL: 59-61cm, 23 1/4" – 24"

Kenny Downhill

XXS: 51-52cm

XS: 53-54cm

S: 55-56cm

M: 57-58cm

L: 59-60cm

XL: 61-62cm

XXL: 63-64cm

TLD

Troy Lee Designs

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A side view of the Bell Sanction 2 Matte Turquoise helmet, featuring angular vents, a visor, and removable cheek pads, ensures excellent airflow. A matte turquoise Bell Sanction 2 off-road motorcycle helmet with a visor and mouth guard, featuring black interior padding and removable cheek pads for added comfort.
brand undefined Bell Sanction 2 Matte Turquoise
From

$199.99 AUD
The S-One Helmet Mini Lifer Purple Matte is a purple protective helmet with ventilation holes, chin straps, and the "S1" logo on the side. It features EPS Fusion Foam for enhanced safety, making it a reliable multi-impact helmet. Image displaying the features of the S1 Lifer Helmet, including detailed information about its EPS Fusion Foam, sweat-absorbing liners, sizing guidelines, and a helmet size chart based on head circumference. Additionally, check out the S-One Helmet Mini Lifer Purple Matte for a compact option with the same top-notch protection.
S-One Helmet Mini Lifer Purple Matte
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$89.99 AUD
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A S-One Helmet Mega Lifer Dark Grey Matte with ventilation holes, adjustable chin straps, and a white "S1" logo on the side offers high-impact protection. A dark grey matte S-One Helmet Mega Lifer with ventilation holes, an adjustable chin strap, and the brand logo on the side.
S-One Helmet Mega Lifer Dark Grey Matte
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$109.99 AUD
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A silver multi-impact helmet with a glittery finish, featuring ventilation holes, soft interior padding, and an adjustable chin strap. The S-One Helmet Retro Lifer Silver Gloss Glitter boasts high-impact protection and a stylish "S1" logo on the side. The S-One Helmet Retro Lifer Silver Gloss Glitter is a silver glittery helmet with black trim, ventilation holes, and a chin strap. This multi-impact helmet features the "S1" logo on the side and is designed for high-impact protection.
S-One Helmet Retro Lifer Silver Gloss Glitter

$159.99 AUD

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$164.99 AUD
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A S-One Helmet Retro Lifer Gold Gloss Glitter with ventilation holes, a black interior, and a chin strap, adorned with a black logo on the side. This multi-impact certified helmet features EPS Fusion Foam for superior protection and comfort. The S-One Helmet Retro Lifer Gold Gloss Glitter features black trim, ventilated holes, an adjustable chin strap, and the "S1" logo on the front. With EPS Fusion Foam for optimal protection, this multi-impact certified helmet ensures safety and style in one sleek package.
S-One Helmet Retro Lifer Gold Gloss Glitter

$159.99 AUD

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$164.99 AUD
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The S-One Helmet Retro Lifer Black Gloss Glitter is a black BMX helmet with a sparkling glitter finish, foam padding inside, ventilation holes on the front, and an adjustable chin strap. This multi-impact helmet ensures safety and style for all your journeys. The S-One Helmet Retro Lifer Black Gloss Glitter features ventilation holes and a padded interior. Front view.
S-One Helmet Retro Lifer Black Gloss Glitter

$159.99 AUD

 From

$164.99 AUD
Save $10.00
The S-One Helmet Retro Lifer White Gloss/Black Checkers features a black and white checkered stripe down the middle and the number "51" on the side. This high-impact helmet includes interior padding and a black chin strap for added comfort and safety. A white S-One Helmet Retro Lifer White Gloss/Black Checkers with the black "S1" logo, multiple ventilation holes, and an adjustable black chin strap. This Australian-certified helmet offers superior protection as a high-impact multi-impact helmet.
S-One Helmet Retro Lifer White Gloss/Black Checkers

$129.99 AUD

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$139.99 AUD
A S-One Helmet Lifer Cyan Matte with ventilation holes, adjustable black chin straps, and "S1" branding on the side. This Australian-certified helmet comes with free sizing kits to ensure the perfect fit. Image of a blue S-One Helmet Lifer Cyan Matte with multiple ventilation holes and a black adjustable strap featuring the S1 logo.
S-One Helmet Lifer Cyan Matte
From

$89.99 AUD
A black, white, and red full-face bike helmet with a visor, featuring ventilation slits and the brand logo "Bell" on the side. This Bell Sanction 2 DLX MIPS Deft Matte Black incorporates MIPS Technology for advanced protection while remaining a lightweight helmet ideal for both amateur and professional riders. A black, white, and red Bell Sanction 2 DLX MIPS Deft Matte Black is displayed, showcasing its aerodynamic design, visor, ventilation, and protective padding. The brand name "Bell" is visible on the lightweight helmet.
Bell Sanction 2 DLX MIPS Deft Matte Black
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$299.99 AUD
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A TLD D4 Carbon AS Helmet W/MIPS Inferno Grey with a red, blue, and yellow design. A TLD D4 Carbon AS Helmet W/MIPS Inferno Grey with a red, blue, and black design.
TLD D4 Carbon AS Helmet W/MIPS Inferno Grey
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$1,099.99 AUD
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A TLD D4 Carbon AS Helmet W/MIPS SRAM Red / Black, featuring the MIPS Brain Protection System. A TLD D4 Carbon AS Helmet W/MIPS SRAM Red / Black with a checkered design on it.
TLD D4 Carbon AS Helmet W/MIPS SRAM Red / Black
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$1,099.99 AUD
A TLD D4 Carbon AS Helmet W/MIPS Ever Black / Gold with a white background. A TLD D4 Carbon AS Helmet W/MIPS Ever Black / Gold motorcycle helmet with a white background.
TLD D4 Carbon AS Helmet W/MIPS Ever Black / Gold
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$1,099.99 AUD
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A TLD D4 Carbon AS Helmet W/MIPS Omega Black / Yellow with a yellow and black design. A TLD D4 Carbon AS helmet with a black and yellow design.
TLD D4 Carbon AS Helmet W/MIPS Omega Black / Yellow
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$1,099.99 AUD
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A TLD D4 AS Composite Helmet W/MIPS Omega Blue / White with a red, blue, and yellow design. A TLD D4 AS Composite Helmet W/MIPS Omega Blue / White with a blue and yellow design and Mips protection system.
TLD D4 AS Composite Helmet W/MIPS Omega Blue / White
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$784.99 AUD
The TLD D4 AS Composite Helmet W/MIPS Stealth Tarmac is shown on a white background. The TLD D4 AS Composite Helmet W/MIPS Stealth Tarmac is shown on a white background.
TLD D4 AS Composite Helmet W/MIPS Stealth Tarmac
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$784.99 AUD
A TLD D4 AS Composite Helmet W/MIPS Pinned Red with Mips C2 protection system on a white background. A TLD D4 AS Composite Helmet W/MIPS Pinned Red with a white logo on it, featuring the MIPS C2 protection system for enhanced helmet safety.
TLD D4 AS Composite Helmet W/MIPS Pinned Red
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$784.99 AUD
Sold out
A TLD D4 AS Composite Helmet W/MIPS Reverb White with a blue and white design, featuring the Mips protection system for enhanced safety. A TLD D4 AS Composite Helmet W/MIPS Reverb White with a blue and white design featuring the Mips protection system.
TLD D4 AS Composite Helmet W/MIPS Reverb White
From

$784.99 AUD
Sold out
A TLD D4 AS Composite Helmet W/MIPS Pinned Light Grey on a white background. A white and yellow TLD D4 AS Composite helmet with MIPS Pinned Light Grey protection system on a white background.
TLD D4 AS Composite Helmet W/MIPS Pinned Light Grey
From

$784.99 AUD
A TLD D4 AS Polyacrylite helmet with a black and red design, ensuring safety. A TLD D4 AS Polyacrylite Helmet W/MIPS Block Charcoal / Red with a black and red design.
TLD D4 AS Polyacrylite Helmet W/MIPS Block Charcoal / Red
From

$584.99 AUD
A TLD D4 AS Polyacrylite Helmet W/MIPS Shadow Olive by Troy Lee Designs. The TLD D4 AS Polyacrylite Helmet W/MIPS Shadow Olive is shown on a white background.
TLD D4 AS Polyacrylite Helmet W/MIPS Shadow Olive
From

$584.99 AUD
A safety helmet with a red, white, and blue TLD D4 AS Polyacrylite Helmet W/MIPS Block Blue / White. A safety helmet with a red, blue, and white TLD D4 AS Polyacrylite Helmet W/MIPS Block Blue / White.
TLD D4 AS Polyacrylite Helmet W/MIPS Block Blue / White
From

$584.99 AUD
A S-One Lifer Helmet RAD Liner with a mustache on it. A S-One Lifer Helmet RAD Liner helmet with a blue liner.
S-One Lifer Helmet RAD Liner
From

$67.99 AUD
A pair of black S-One Lifer Helmet Liners on a white background. A pair of black gloves with S-One Lifer Helmet Liners in a plastic bag.
S-One Lifer Helmet Liner
From

$26.99 AUD
Save $20.00
The S-One Helmet Lifer Green Camo provides head protection against multiple impacts. A S-One Helmet Lifer Green Camo on a white background.
S-One Helmet Lifer Green Camo

$89.99 AUD

 From

$109.99 AUD