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
Sort by
Sort by
New
Matte black Protec Full Cut Helmet/Bicycle Union Signature with ventilation holes, padded interior, and adjustable chin strap. The Pro-Tec logo is visible on the side, and its high-impact ABS shell ensures durability and protection for action sports. Bicycle Union Signature Protec Full Cut helmet in matte black, featuring ventilation holes, adjustable grey straps, printed side graphics, and a high-impact ABS shell for superior protection and durability—ideal for action sports.
Protec Full Cut Helmet / Bicycle Union Signature

$131.00 USD

Black
XSSMLXL
New
The Protec Full Cut Helmet / S&M Signature Light Grey features a light grey shell with red and yellow decals, black chin straps, and ventilation holes on the top and sides for high-impact protection. Protec Full Cut Helmet / S&M Signature Light Grey featuring black straps, ventilation holes, and signature S&M graphics on the side, offers high-impact protection for action sports enthusiasts.
Protec Full Cut Helmet / S&M Signature Light Grey

$131.00 USD

-
XSSMLXL
The TSG Meta Helmet in Satin White features ventilation holes, lightweight In-mold construction, adjustable black straps, a Dial Fit System, and buckle for reliable head protection during sports activities. Screenshot of TSG Meta Helmet / Satin White features list showing protection standards: lightweight In-mold construction, EN 1078, CPSC, UKCA certifications, and the Dial Fit System, each briefly described.
TSG Meta Helmet / Satin White

$95.00 USD

White
XXS-XSS-ML-XL
Sold out
The TLD 26.1 D4 AS Polyacrylite Helmet in The Line Charcoal/White features a full-face design with visor, "Troy Lee Designs" branding, and advanced Mips brain protection—ideal for mountain biking. TLD 26.1 D4 AS Polyacrylite Helmet size chart shows head circumferences (cm/in) and sizes from XS to XXL for The Line Charcoal/White full-face mountain bike helmet by Troy Lee Designs.
TLD 26.1 D4 AS Polyacrylite Helmet / The Line Charcoal/White

$436.00 USD

-
XS/SMMD/LGXL/XXL
Sold out
The TLD 26.1 D4 AS Composite Helmet in Flared White/Indigo features geometric purple and teal accents, a visor, open face design, Mips protection, and Troy Lee Designs branding. TLD 26.1 D4 AS Composite Helmet (Flared White/Indigo) size chart shows head circumference in inches/cm, with XS–3XL BMX/downhill sizes featuring Mips protection, all displayed in a color-coded table.
TLD 26.1 D4 AS Composite Helmet / Flared White/Indigo

$581.00 USD

-
XS/SMMD/LGXL/XXL
Sold out
The TLD 26.1 D4 AS Composite Helmet / Crest Real Teal is a BMX helmet in white, blue, and teal with geometric patterns, "Troy Lee Designs" on the visor, and advanced Mips protection for enhanced safety. The TLD 26.1 D4 AS Composite Helmet / Crest Real Teal is a full-face motocross helmet in teal, white, and black with the Troy Lee Designs logo, featuring advanced Mips protection for added safety.
TLD 26.1 D4 AS Composite Helmet / Crest Real Teal

$581.00 USD

-
XS/SMMD/LGXL/XXL
Sold out
The TLD 26.1 D4 AS Composite Helmet in Torched White/Silver features abstract flame graphics, "Troy Lee Designs" branding on the visor and chin, integrated Mips protection, and is shown in profile view. Troy Lee Designs TLD 26.1 D4 AS Composite Helmet Torched White/Silver size chart shows head circumference in inches and centimeters for sizes XS to 3XL, including Mips protection options for BMX and Downhill riders.
TLD 26.1 D4 AS Composite Helmet / Torched White/Silver

$602.00 USD

-
XS/SMMD/LGXL/XXL
The TLD 26.1 D4 AS Carbon Helmet / Lined Up is a full-face helmet with Mips, a large visor, black/white/yellow/orange graphics, and bold "Troy Lee Designs" branding for standout style and safety. TLD 26.1 D4 AS Carbon Helmet size chart shows head circumference in inches/cm, with full-face mountain biking helmet sizes (Lined Up model) highlighted in different colors.
TLD 26.1 D4 AS Carbon Helmet / Lined Up

$798.00 USD

-
XS/SMMD/LGXL/XXL
The TLD 26.1 D4 AS Carbon Helmet in Overspray Gold/Black is a full-face mountain bike helmet for downhill BMX, featuring Mips protection and "Troy Lee Designs" branding on the visor and chin. The TLD 26.1 D4 AS Carbon Helmet size chart shows head circumference ranges in inches and centimeters, covering sizes XS to 3XL, with models like Overspray Gold/Black offering full-face protection and Mips options for downhill BMX or MTB.
TLD 26.1 D4 AS Carbon Helmet / Overspray Gold/Black

$820.00 USD

-
XS/SMMD/LGXL/XXL
The S-One Helmet Mega Lifer / White Gloss is a certified skate helmet with a white gloss shell, black ventilation holes, black adjustable chin strap, EPS Fusion Foam for protection, and the "S1" logo on the side. A diagram of the S-One Helmet Mega Lifer in White Gloss, highlighting its multiple impact protection with advanced EPS Fusion Foam.
S-One Helmet Mega Lifer / White Gloss

$80.00 USD

White
XSSMLXLXXLXXXL
The S-One Helmet Mega Lifer in Blood Red Gloss features black ventilation holes, black interior padding, an adjustable black chin strap, and EPS Fusion Foam for multiple impact protection. Cross-section diagram of the S-One Helmet Mega Lifer / Blood Red Gloss, a certified skate helmet with EPS fusion foam for multi-impact protection, sweat-absorbing liner, and size chart to select the right fit by head circumference.
S-One Helmet Mega Lifer / Blood Red Gloss

$80.00 USD

Red
XSSMLXLXXLXXXL
The S-One Helmet Retro Lifer E-Helmet in White Gloss with Black Checkers features ear protection, a chin strap, and the "S1" logo. Ideal E-bike helmet for riders who value both style and safety. Inside view of the S-One Helmet Retro Lifer E-Helmet in White Gloss/Black Checkers: NTA 8776 certified, deep fit, replaceable ear liner, sweat-absorbing colored liners, and sizes XS to 2X-Large—ideal for e-bike riders.
S-One Helmet Retro Lifer E-Helmet / White Gloss/ Black Checkers

$117.00 USD

White
XSSMLXLXXLXXXL
The S-One Helmet Retro Lifer E-Helmet in White Gloss features NTA 8776 certification, ventilation holes, black interior padding, an adjustable chin strap, and an "S1" logo on the side. Inside view of the S-One Helmet Retro Lifer E-Helmet / White Gloss, a multi-impact helmet with sweat-absorbing liners in various sizes/colors, labeled by size. Features deep fit, replaceable ear liner, and NTA 8776 certified safety standards.
S-One Helmet Retro Lifer E-Helmet / White Gloss

$109.00 USD

White
XSSMLXLXXLXXXL
An S-One Helmet Retro Lifer E-Helmet in Ocean Matte, featuring black padding, ventilation holes, and an adjustable chin strap for multi-impact protection, is displayed against a white background. Inside view of the S-One Helmet Retro Lifer E-Helmet / Ocean Matte, featuring deep fit, replaceable ear liner, sweat-absorbing colored sizing liners, and helmet size info from XS to 2X-Large. NTA 8776 certified.
S-One Helmet Retro Lifer E-Helmet / Ocean Matte

$109.00 USD

Blue
XSSMLXLXXLXXXL
The S-One Helmet Retro Lifer E-Helmet in Black Matte features ventilation holes, ear protection, an adjustable chin strap, and an "S1" logo on the side. Inside the S-One Helmet Retro Lifer E-Helmet / Black Matte: a deep fit, removable ear liner, sweat-absorbing sizing liners (7 sizes), labeled features, and NTA 8776 certified multi-impact safety.
S-One Helmet Retro Lifer E-Helmet / Black Matte

$109.00 USD

Black
XSSMLXLXXLXXXL
The S-One Helmet Retro Lifer E-Helmet in Ambush Green Matte features a matte green finish, three round front vents, black interior padding, a chin strap, and a white "S1" logo on the side. The S-One Helmet Retro Lifer E-Helmet / Ambush Green Matte features a deep fit, replaceable ear liner, sweat-absorbing sizing liners, NTA 8776 safety certification, and a sizing range from XS to 2X-Large.
S-One Helmet Retro Lifer E-Helmet / Ambush Green Matte

$109.00 USD

Green
XSSMLXLXXLXXXL
The S-One Lifer Helmet / Rainbow Swirl is a certified skate helmet with rainbow swirl designs, ventilation holes, and adjustable chin straps for multi-impact protection. Infographic detailing the S-One Lifer Helmet / Rainbow Swirl features: multiple impact protection, sizing liners, instructions for measuring head circumference, and a certified skate helmet size chart for proper fit.
S-One Lifer Helmet / Rainbow Swirl

$73.00 USD

Multi
XSSMLXLXXLXXXL
The S-One Lifer Helmet in Blood Red Gloss features ventilation holes, a chin strap, and S1 logos for superior multi-impact head protection in classic skate style. The S-One Lifer Helmet in Blood Red Gloss features ventilation holes, a black adjustable chin strap, and is designed for multiple impact protection.
S-One Lifer Helmet / Blood Red Gloss

$66.00 USD

Red
XSSMLXLXXLXXXL
The S-One Lifer Helmet in Purple Tie Dye features black straps, ventilation holes, and certified multi-impact skate helmet safety. The S-One Lifer Helmet / Purple Tie Dye is a certified skate helmet with a purple tie-dye design, black adjustable straps, ventilation holes, and multi-impact protection for enhanced safety and style.
S-One Lifer Helmet / Purple Tie Dye

$66.00 USD

Purple
XSSMLXLXXLXXXL
Sold out
The S-One Lifer Helmet / Light Pink Cheetah - Pink Helmet Posse Collab features a light pink cheetah print, multiple vents, and adjustable maroon "S1" straps for a customizable fit. The S-One Lifer Helmet / Light Pink Cheetah - Pink Helmet Posse Collab is a pink and maroon cheetah print skate helmet with ventilation holes, adjustable strap, and certified multi-impact protection for safety and style.
S-One Lifer Helmet / Light Pink Cheetah - Pink Helmet Posse Collab

$73.00 USD

Pink
XSSMLXLXXLXXXL
The S-One Lifer Helmet / Leopard features a bold leopard print, black straps, multiple vent holes, and multi-impact protection—making it a stylish and safe choice for skating. S-One Lifer Helmet / Leopard sizing guide highlights skateboard helmet features, multiple impact protection, liner options, and a size chart with head circumference measurements in inches and centimeters.
S-One Lifer Helmet / Leopard

$73.00 USD

Multi
XSSMLXLXXLXXXL
The S-One Lifer Helmet / Jelly Beans features a multicolored jelly bean pattern, black foam interior, and adjustable chin strap, offering multiple impact protection for action sports. The S-One Lifer Helmet / Jelly Beans is a certified skateboard helmet with a vibrant jelly bean pattern, black adjustable straps, multi-impact protection, and the S1 logo on the side and strap.
S-One Lifer Helmet / Jelly Beans

$80.00 USD

Multi
XSSMLXLXXLXXXL
The S-One Lifer Helmet in Black Matte with Red Straps is a certified skate helmet featuring ventilation holes and an "S1" logo on the side for multiple impact protection. The S-One Lifer Helmet in Black Matte features red straps and logo, providing certified multi-impact skate safety.
S-One Lifer Helmet / Black Matte/Red Straps

$66.00 USD

Black/Red
XSSMLXLXXLXXXL
The S-One Lifer Helmet in Matte/Pink Checkers features a pink checkered stripe, pink "S1" logo, pink straps, vents, adjustable buckle, and certified multi-impact protection for safety and style. Sizing chart and fitting guide for the S-One Lifer Helmet Matte/Pink Checkers, a certified skate helmet with top impact protection—includes cross-section, liner features, and size selection by head circumference.
S-One Lifer Helmet / Matte/Pink Checkers

$73.00 USD

Black/Pink
XSSMLXLXXLXXXL

Showing 192 of 292