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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Protec Classic Certified Helmet Matte Black / XL
Protec Classic Certified Helmet Matte Black
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$89.99 AUD
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Protec Classic Certified Helmet Matte Olive / XL
Protec Classic Certified Helmet Matte Olive
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$89.99 AUD
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The Bell Sanction 2 DLX MIPS Matte Black is a black bicycle helmet with a matte finish, MIPS technology for safety, and two rectangular vents on top. A size chart for the Bell Sanction 2 DLX MIPS Matte Black helmet displays XS/S, M, L, and XL sizes with measurements in centimeters, inches, and hat sizes—ideal for BMX racing helmet fitting.
Bell Sanction 2 DLX MIPS Matte Black
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$279.99 AUD
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The TLD 22S D3 AS Fiberlite Helmet Mono Black, a lightweight composite design, is shown on a white background. TLD 22S D3 AS Fiberlite Helmet / Mono Black / XS
TLD 22S D3 AS Fiberlite Helmet Mono Black

$282.99 AUD

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$519.99 AUD
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S-One Lifer Helmet / Boyd Hilder Black/Grey Fade / XXL A diagram of S-One Lifer Helmet / Boyd Hilder Black/Grey Fade showing the protective foam, sizing liners, and a guide on picking the correct helmet size based on head circumference in inches and centimeters. The diagram also highlights that it's a multiple impact helmet and includes information about available sizing kits.
S-One Lifer Helmet / Boyd Hilder Black/Grey Fade

$119.99 AUD

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$134.99 AUD
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Protec Certified Full Cut Helmet / Matte White / XL The Protec Fullcut Certified Helmet, available in matte white, boasts multiple certifications and features ventilation holes along with an adjustable chin strap for a secure fit.
Protec Fullcut Certifed Helmet
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$129.99 AUD
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Bell Sanction Matte Red/Black Presences Helmet / Matte Red/Black / M
brand undefined Bell Sanction Matte Red/Black Presence Helmet
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$169.99 AUD
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A Goodstock Certified Helmet / Matte Black, featuring ventilation holes and an adjustable chin strap, is shown against a white background. Designed for high and low impact protection, it also incorporates CoolMax liner tech for added comfort. A Goodstock Certified Helmet / Matte Black, viewed from the top, showcases a sleek black design with multiple ventilation holes and integrated CoolMax liner tech for high and low impact protection.
Goodstock Certified Helmet / Matte Black
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$89.99 AUD
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The S-One Helmet Lifer Black Gloss Glitter features ventilation holes and adjustable straps, offering top-notch protection as a multi-impact helmet. A S-One Helmet Lifer Black Gloss Glitter with a chin strap, the logo "S1" on the side, and Australian-certified helmet standards, comes with free sizing kits.
S-One Helmet Lifer Black Gloss Glitter
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$139.99 AUD
S-One Lifer Helmet / Dark Matte Green / XL An informative diagram displaying the inside structure of an S-One Lifer Helmet / Dark Matte Green with EPS Fusion Foam and a sizing chart for different head circumferences.
S-One Lifer Helmet / Dark Matte Green
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$109.99 AUD
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A Bell Sanction (1) Visor Bolts set with two bolts, two washers, and a three-pronged piece displayed on a white background.
brand undefined Bell Sanction (1) Visor Bolts
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$14.99 AUD
The S-One Helmet Lifer Purple Gloss Glitter is a purple, glitter-covered high-impact helmet with ventilation holes and an adjustable chin strap. A sizing chart for the Australian-certified S-One Helmet Lifer Purple Gloss Glitter includes measurement instructions, liner sizes (Small to Mega), and an illustration showing where to measure head circumference. The helmet's interior features are also detailed. Free sizing kits are available to ensure a perfect fit.
S-One Helmet Lifer Purple Gloss Glitter
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$139.99 AUD
A certified S-One Lifer Helmet / Light Grey with the word s1 on it, providing head protection. An infographic detailing features of the S-One Lifer Helmet / Light Grey, including foam protection, sweat-absorbing liner, multiple impact protection, helmet sizing chart, and instructions for measuring head size to pick the correct helmet size. Free sizing kits are also available for a perfect fit.
S-One Lifer Helmet / Light Grey
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$109.99 AUD
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The Bell Sanction 2 Matte Cement is an entry-level, matte beige full-face helmet with visor and vents, ideal for BMX or motocross riders. Shown on a white background. The Bell Sanction 2 Matte Cement helmet, shown in side profile, features a black visor and multiple air vents—an ideal entry-level choice for motocross or BMX riders seeking style and protection.
Bell Sanction 2 Matte Cement
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$199.99 AUD
The S-One Helmet Lifer in Black Matte with Orange Straps showcases vibrant orange straps and ventilation holes on top, designed with Multiple Impact Protection using EPS Fusion Foam for enhanced safety. The S-One Helmet Lifer in Black Matte with Orange Straps showcases ventilation holes and a secure chin buckle, offering optimal head protection.
S-One Helmet Lifer / Black Matte/Orange Straps
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$109.99 AUD
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A black multi-impact helmet with a speckled design, featuring the "S1" logo on the front left side and an adjustable chin strap with a red clip. This S-One Helmet Mini Lifer Black Gloss Glitter is constructed with EPS Fusion Foam for superior protection. A black S-One Helmet Mini Lifer Black Gloss Glitter with a glittery finish, visor holes, and an adjustable black strap. The multi-impact helmet features EPS Fusion Foam and white "S1" branding on the side and on the strap.
S-One Helmet Mini Lifer Black Gloss Glitter

$109.99 AUD

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$119.99 AUD
A S-One Helmet Lifer Black Camo for skateboarding protection on a white background. A close up of an S-One Helmet Lifer Black Camo labeled for skateboarding.
S-One Helmet Lifer Black Camo
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$129.99 AUD
A white S-One Mini Lifer Helmet with the word sz on it, offering certified high impact protection. Chart detailing the S1 Lifer Helmet sizes, including an internal view of the helmet and sizing instructions. Features EPS Fusion Foam, sweat-absorbing liner, and various certification standards. Also available: S-One Mini Lifer Helmet / Gloss White with Certified Multiple Impact Protection for smaller heads.
S-One Mini Lifer Helmet / Gloss White
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$99.99 AUD
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The black S-One Helmet Lifer Black Matte/White Checkers features a white checkerboard stripe, "S1" logo on the side, adjustable straps, and is designed as a multi-impact helmet. Plus, it comes with free sizing kits for the perfect fit. A S-One Helmet Lifer Black Matte/White Checkers featuring a checkered pattern on the side and the "S1" logo in white. This multi-impact helmet includes attached straps for securing under the chin and comes with free sizing kits.
S-One Helmet Lifer Black Matte/White Checkers
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$129.99 AUD
A S-One Helmet Lifer Black Matte/Star for head protection and multiple impact protection. A close up of a S-One Helmet Lifer Black Matte/Star for head protection.
S-One Helmet Lifer Black Matte/Star
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$129.99 AUD
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TLD 23 D3 AS Fiberlite Helmet Slant Grey / Grey/Black / XXL A helmet size chart from Troy Lee Designs, featuring the lightweight composite design of the TLD 23 D3 AS Fiberlite Helmet Slant Grey, displays various models in rows and head circumferences (cm) in columns alongside corresponding size recommendations. Perfect for BMX racers seeking optimal fit and performance.
TLD 23 D3 AS Fiberlite Helmet Slant Grey

$282.99 AUD

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$519.95 AUD
The S-One Helmet Lifer in Black Matte with Green Straps boasts a sleek design featuring ventilation holes, an adjustable chin strap, and is enhanced with EPS Fusion Foam for multiple impact protection, ensuring both safety and style. The S-One Helmet Lifer in Black Matte with Green Straps features ventilation holes and the "S1" logo on the side. This helmet provides certified high impact protection with its multiple impact protection design, ensuring safety.
S-One Helmet Lifer / Black Matte/Green Straps
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$109.99 AUD
A black S-One Helmet Mega Lifer Black Matte with ventilation holes, adjustable straps, and a white "S1" logo on the front left side. This high-impact helmet also includes free sizing kits for the perfect fit. A **S-One Helmet Mega Lifer Black Matte** branded skate helmet features multiple ventilation holes, an adjustable chin strap, and high-impact protection.
S-One Helmet Mega Lifer Black Matte
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$129.99 AUD
The TSG Evolution Helmet in satin black offers high-impact protection, an adjustable chin strap, ventilation holes, and a side logo, displayed against a white background.
TSG Evolution Helmet / Satin Black
From

$99.99 AUD