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

292 products
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A blue S-One Helmet Mini Lifer Light Blue Metallic Gloss with black ventilation holes, gray padding inside, and an adjustable black chin strap features advanced EPS Fusion Foam for superior comfort and protection. A helmet sizing chart showing different measurements for various sizes of the S-One Helmet Mini Lifer Light Blue Metallic Gloss. The chart includes a guide on how to measure head circumference and indicates sizes from Mini to Mega, ensuring the perfect fit for this multi-impact helmet with EPS Fusion Foam.
S-One Helmet Mini Lifer Light Blue Metallic Gloss

$66.00 USD

Metallic Blue
XSSMLXLXXLXXXL
A glittery gray skateboard helmet with air vents, black adjustable chin straps, and an "S1" logo on the side, the S-One Helmet Lifer Silver Glitter offers top-notch protection. A S-One Helmet Lifer Silver Glitter with black straps and multiple ventilation holes, this Australian-certified helmet ensures both safety and style.
S-One Helmet Lifer Silver Glitter

$80.00 USD

Glitter
XSSMLXLXXLXXXL
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

$73.00 USD

Green Camo
XSSMLXLXXLXXXL
Sold out
Protec JR Classic Fit Certified Helmet / Tye Die / Youth S
Protec JR Classic Fit Certified Helmet / Tye Die

$80.00 USD

Tye Die
Youth S
Sold out
The Bell Sanction 2 DLX MIPS Camo Matte Black full-face helmet, shown side-on against a white background, features a matte black geometric design with angular vents and a visor—lightweight yet built for protection. The Bell Sanction 2 DLX MIPS Camo Matte Black helmet is shown from the front, displaying three elongated vents and a matte finish for a lightweight feel.
Bell Sanction 2 DLX MIPS Camo Matte Black

$218.00 USD

Matte Black
XS-S
Sold out
The TSG Evolution Helmet / Goldbeck Protest features black graffiti-style text and graphics, hardshell construction for high-impact protection, black adjustable chin straps, a fit system, and foam interior padding. The TSG Evolution Helmet / Goldbeck Protest is a white slim hardshell helmet with black graphic text reading "POWER," "CORRUPTION," and "GREED," plus images. It offers high-impact protection and a black adjustable strap for comfort.
TSG Evolution Helmet / Goldbeck Protest

$73.00 USD

Black/White
S-ML-XL
The TSG Dawn Flex Full Cut Helmet in red features a glossy finish, hardshell construction, ventilation holes, and an adjustable black chin strap for skateboarding safety. The TSG Dawn Flex Full Cut Helmet in red has hardshell construction, ventilation slots, and a black chin strap. Shown from the side on a white background.
TSG Dawn Flex Full Cut Helmet / Red

$73.00 USD

Red
S-MM-L
The TSG Prevention Helmet Satin Black features a visor, advanced ventilation system with side vents, and an adjustable chin strap, shown against a white background. The TSG Prevention Helmet Satin Black features a matte finish, visor, angular vents, side cutout, adjustable chin strap, “Technical Safety Gear” text on the side, and a ventilation system ideal for BMX riders.
TSG Prevention Helmet Satin Black

$182.00 USD

Satin Black
S-ML-XL
Sold out
The Bell Sanction 2 DLX MIPS Fast House Matte Black is a lightweight full-face motocross helmet with a visor, featuring MIPS technology for enhanced safety. The Bell Sanction 2 DLX MIPS Fast House provides a sleek black full-face helmet for BMX racing, complete with MIPS technology, a tinted visor, and multiple ventilation openings.
Bell Sanction 2 DLX MIPS Fast House Matte Black

$203.00 USD

Matte Black
XS-SMLXL
Sold out
The Oneal Transition Helmet is a black, lightweight full-face helmet featuring a visor, chin guard, and ventilation openings for maximum airflow. Top view of a black Oneal Transition Helmet with prominent white O'Neal branding on the top, featuring a lightweight full-face design for maximum airflow.
Oneal Transition Helmet
$182.00 USD
Black
XSSMLXL
A S-One Helmet Mini Lifer Silver Gloss Glitter with a black interior padding, featuring the logo "S1". It incorporates EPS Fusion Foam for multi-impact protection, multiple ventilation holes, and an adjustable chin strap with a red buckle. The S-One Helmet Mini Lifer Silver Gloss Glitter, featuring ventilation holes and a black adjustable strap with red clasps, is designed for head protection and boasts EPS Fusion Foam for enhanced safety.
S-One Helmet Mini Lifer Silver Gloss Glitter

$80.00 USD

Glitter
XSSMLXLXXLXXXL
Bright pink S-One Helmet Mini Lifer Hot Pink Gloss with multiple ventilation holes and an adjustable black strap. The helmet features the "S1" logo on the front and EPS Fusion Foam for added protection. The S-One Helmet Mini Lifer Hot Pink Gloss is a bright pink helmet with black vent holes and an adjustable black chin strap. It features the logo "S1" on the side and incorporates EPS Fusion Foam for superior protection.
S-One Helmet Mini Lifer Hot Pink Gloss

$66.00 USD

Hot Pink
XSSMLXLXXLXXXL
Sold out
A blue TLD D4 AS Polyacrylite Helmet W/MIPS Shadow Blue with a white Troy Lee Designs logo on it. The TLD D4 AS Polyacrylite Helmet W/MIPS Shadow Blue is shown on a white background, emphasizing its safety features.
TLD D4 AS Polyacrylite Helmet W/MIPS Shadow Blue

$425.00 USD

Shadow Blue
XS-SM-LXL-XXL
A certified S-One Helmet Retro Lifer White Gloss on a white background. A certified S-One Helmet Retro Lifer White Gloss with the word s1 on it, designed for enhanced protection.
S-One Helmet Retro Lifer White Gloss

$91.00 USD

Gloss White
XSSMLXLXXLXXXL
Sold out
Side view of the Bell Sanction 2 White matte entry-level helmet with angular vents and a visor, displayed against a white background. Top view of the Bell Sanction 2 White helmet, an entry-level model, displays interior padding, chin strap, and ventilation areas against a plain white background.
Bell Sanction 2 White

$145.00 USD

White
XS-S
The Fox YTH V1 Taunt Helmet is a black, full-face youth BMX helmet with an open front, visor, and a small fox logo on the side—perfect for entry-level riders. Top view of the Fox YTH V1 Taunt Helmet in glossy black, featuring a bold gray fox head logo—a perfect entry-level BMX helmet for young riders.
Fox YTH V1 Taunt Helmet

$218.00 USD

Black/Slate
Kids SKids MKids L
The TLD 26.1 D4 AS Composite Helmet / Stealth Pumice is a beige and black full-face helmet with geometric graphics, visor, Troy Lee Designs branding, and Mips protection—perfect for downhill or BMX riding. The Troy Lee Designs size chart shows head circumference in inches and cm, with color-coded sizing for BMX and downhill helmets like the TLD 26.1 D4 AS Composite Helmet / Stealth Pumice, including models with Mips protection.
TLD 26.1 D4 AS Composite Helmet / Stealth Pumice

$573.00 USD

-
XS/SMMD/LGXL/XXL
The S-One Lifer Helmet in Purple Matte features ventilation holes, black adjustable straps, a side "S1" logo, and delivers certified safety with multiple impact protection. The S-One Lifer Helmet in Purple Matte features ventilation holes and an adjustable black chin strap, shown from a side view, designed for superior head protection and multiple impact protection.
S-One Lifer Helmet / Purple Matte

$66.00 USD

Purple
XSSMLXLXXLXXXL
The S-One Helmet Lifer in Tree Green Matte features ventilation holes, black adjustable straps, and a white "S1" logo on the left side for multiple impact protection. The S-One Helmet Lifer in Tree Green Matte features ventilation holes, black adjustable straps, side "S1" logo, and is designed for multiple impact protection.
S-One Helmet Lifer / Tree Green Matte

$66.00 USD

Matte Tree Green
XSSMLXLXXLXXXL
Sold out
Introducing the Oneal Transition Helmet—a lightweight black and gold full-face Enduro mountain bike helmet that includes a visor, showcases the O'Neal logo prominently, and features a magnetic buckle for enhanced convenience.
Oneal Transition Helmet

$218.00 USD

Black/White/Gold
SML
A shiny yellow S-One Helmet Mini Lifer Gold Gloss Glitter with ventilation holes, black straps, and an adjustable buckle. Made with EPS Fusion Foam for superior protection, the helmet features a logo with the letter 'S' and the number '1' on one side. A yellow, glittery, hard-shell helmet with black adjustable straps and multiple ventilation holes. The S-One Helmet Mini Lifer Gold Gloss Glitter has "S1" printed on the side and features EPS Fusion Foam for enhanced protection as a multi-impact helmet.
S-One Helmet Mini Lifer Gold Gloss Glitter

$80.00 USD

Glitter
XSSMLXLXXLXXXL
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

$95.00 USD

Checkerboard
XSSMLXLXXLXXXL
The S-One Helmet Retro Lifer Cyan Matte is a blue safety helmet with a black interior, multiple ventilation holes, and a chin strap, featuring "S1" branding on the side. This high-impact helmet ensures ultimate protection while maintaining style. A blue S-One Helmet Retro Lifer Cyan Matte with ventilation holes, black trim, and a chin strap. This multi-impact helmet is designed for both safety and style.
S-One Helmet Retro Lifer Cyan Matte

$80.00 USD

Cyan
XSSMLXLXXLXXXL
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

$66.00 USD

Cyan
XSSMLXLXXLXXXL

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