Cycling helmets / Medium
This range

Medium Cycling Helmets

Checked 2026-10-21

The most common helmet size for average adult head shapes 38 helmets · 20 brands

Lightweight For men For women MIPS Road Mountain bike helmets Commuter CPSC certified For kids With visors Medium Affordable Large Black Matte Ventilated Skateboard & scooter helmets With LED lights E-bike helmets Small White Aero For toddlers Rechargeable smart helmets Magnetic Unisex Universal fit Gravel Blue Gray NTA-8776 certified helmets Low profile Pink Retro Glossy Orange Full face mountain bike helmets Green

Best Medium Cycling Helmets

# House Listing Level Notes Check offer
1 THOUSAND Stealth Black Retro Commuter Helmet Medium 9.4 THOUSAND Stealth Black Retro Commuter Helmet Medium $99 Black · Men · Women
$99 Check offer
2 MET Helmets Gray glossy MIPS touring helmet 9.3 MET Helmets Gray glossy MIPS touring helmet $92.95 Gray · Lightweight · MIPS
$92.95 Check offer
3 Retrospec Matte White Dakota Medium Ventilated Helmet 9.1 Retrospec Matte White Dakota Medium Ventilated Helmet $29.99 Men · Commuter · Matte
$29.99 Check offer
4 Fox Racing Speedframe mountain bike helmet in solid black 9.4 Fox Racing Speedframe mountain bike helmet in solid black $120 Black · MIPS · Mountain bike helmets
$120 Check offer
5 Giro Matte black and bright red medium Syntax helmet 9.4 Giro Matte black and bright red medium Syntax helmet $99.95 Black · Lightweight · MIPS
$99.95 Check offer
6 OutdoorMaster Carbon black MIPS adult recreational helmet 9.4 OutdoorMaster Carbon black MIPS adult recreational helmet $59.99 Black · MIPS · With visors
$59.99 Check offer
7 DKONI Urban scooter helmet with detachable rear taillight 9.3 DKONI Urban scooter helmet with detachable rear taillight $38.99 Men · Women · Road
$38.99 Check offer
8 Kask White Glossy Protone Icon Road Helmet 9.4 Kask White Glossy Protone Icon Road Helmet $300 Road · Mountain bike helmets · White
$300 Check offer
9 ABUS White Hyban MIPS Urban LED Helmet 6.9 ABUS White Hyban MIPS Urban LED Helmet $99.99 Men · Women · MIPS
$99.99 Check offer
10 SMITH Matte Black Dispatch E-Bike MIPS Helmet 8.1 SMITH Matte Black Dispatch E-Bike MIPS Helmet $195 Black · Lightweight · MIPS
$195 Check offer
Common questions

Medium helmet questions

What head circumference does a medium helmet fit?

Most medium helmets state a range like 52–58 cm or 55–59 cm.

Can I adjust a medium helmet if it feels loose?

Yes, most have a dial or strap system to tighten the fit.

Do medium helmets come with MIPS?

Some medium models include a MIPS liner, others do not.

Are medium helmets only for adults?

Mostly, but some youth helmets also use a medium size label.

What a medium helmet fits

Medium is the size most adult heads land in. On a medium helmet you will see a stated range like 52–58 cm or 55–59 cm. That range covers many men and women without needing a different shell size.

How medium helmets are built

The shell is one size, with a dial or strap system to fine-tune the fit. Ventilation channels run front to back, and some models add MIPS liners or USB-rechargeable LED lights. Padding thickness and strap anchors are set for the medium head circumference.

Details that matter at this size

Check the stated centimeter range against your head measurement, not just the letter. A medium in one model can fit tighter than a medium in another. Look for adjustable dials, removable pads, and a visor if you ride in sun or rain.

Colors and features common to medium

Medium helmets come in black, white, gray, blue, green, red, and brown. Some are marketed for men or women, others are unisex. LED lights, MIPS, and commuter shapes show up across this size.

Nearby sets
MIPS Lightweight Black Commuter Road With visors Small For men