---
title: Choosing and Fitting a Bike Helmet and Safety Gear
description: How to pick a helmet that actually fits and round out your riding safety gear.
category: safety
tags: [bike-safety, helmet, cycling, gear]
version: "1.0"
updated: 2026-09-12
sources:
  - name: U.S. Consumer Product Safety Commission — bicycle helmet standard and fitting guidance
    url: https://www.cpsc.gov
  - name: MIPS AB — rotational-impact protection technology
    url: https://mipsprotection.com
  - name: Snell Memorial Foundation — independent helmet certification standards
    url: https://smf.org
---

Getting a helmet that actually fits — and a few other bits of gear — matters more than which brand or color you pick. Here's how to get it right, whether you're kitting out a kid, yourself, or the whole family.

## Before You Buy

- [ ] Check for a CPSC sticker (US) or equivalent safety mark `{essential}`
  Any bike helmet sold in the US must meet the CPSC standard; look for the certification sticker inside the helmet. In the EU/UK look for CE EN 1078.
- [ ] Measure head circumference with a soft tape, about 1 inch above the eyebrows
  Most brands' size charts are far more reliable than trying helmets by eye.
- [ ] Pick the helmet type for the riding you actually do (road, commuter, MTB, BMX/skate)
  Full-face and skate-style helmets meet different standards (like ASTM F1952 for downhill) than standard road/commuter helmets.
- [ ] Favor a helmet with MIPS or an equivalent rotational-impact layer `{when: riding-in-traffic-often}`
  Designed to reduce the twisting forces on the brain in an angled hit.
- [ ] Get a kids'-specific helmet, not an adult one sized down `{when: buying-for-a-child}`
  The foam density and coverage are different for smaller, lighter heads.
- [ ] Never buy a used or secondhand helmet unless you're certain of its full history `{essential}`
  You can't see hairline cracks or crushed foam from a past impact, and there's no way to verify it wasn't crashed.

## Fitting It Properly

- [ ] Sit the helmet level on your head, about two finger-widths above your eyebrows
  Not tipped back on the crown, which exposes the forehead.
- [ ] Adjust the rear fit dial or pads until the helmet is snug all around with no gaps or pressure points
- [ ] Buckle the chin strap and check the "V" of the side straps sits just below and in front of each ear
- [ ] Run the two-finger test: only two fingers should fit between the strap and your chin when buckled
- [ ] Open your mouth wide — the helmet should pull down noticeably on your head `{essential}`
  If it doesn't move, the strap is too loose — a loose strap means the helmet can come off entirely in a fall.
- [ ] Shake your head side to side and front to back
  The helmet shouldn't shift or slide over your eyes.
- [ ] Re-check fit every few months for growing kids `{essential}`
  An outgrown helmet no longer protects properly and needs replacing, not just re-adjusting.

## Choosing the Rest of Your Safety Gear

- [ ] Get padded gloves if you ride regularly
  They cushion the small bones in your hands in a fall and improve grip.
- [ ] Add knee and elbow pads for mountain biking, BMX, or learning to ride
  Mainly worth it for higher-fall-risk riding or beginners still finding their balance.
- [ ] Choose bright or reflective outer layers for any riding near traffic
  Visibility matters as much as padding for avoiding a collision in the first place.
- [ ] Fit a white front light and red rear light `{essential}`
  Often legally required after dark in most jurisdictions, check your local road rules for exact requirements.
- [ ] Add reflective tape or ankle bands if you commute
  Leg movement catches a driver's eye more than a static reflector.
- [ ] Get a properly rated motorcycle-style helmet instead if you ride an e-bike or moped capable of higher speeds `{when: riding-an-ebike-or-moped}`
  Standard bike helmets aren't rated for those impact speeds.

## Ongoing Care

- [ ] Replace the helmet after any crash or hard impact, even if it looks fine `{essential}`
  The foam liner compresses on impact to absorb energy and doesn't spring back, so it won't protect you the same way twice.
- [ ] Replace a helmet after 5–10 years even without a crash, per most manufacturers' guidance
  The foam and shell can degrade with age, UV exposure, and temperature swings.
- [ ] Store the helmet away from direct heat and sun (not on a car dashboard or trunk)
  Heat can warp the shell and degrade the foam over time.
- [ ] Wipe pads and straps clean with mild soap and water
  Avoid solvents, which can break down the foam or shell material.
- [ ] Inspect before each season for cracks, frayed straps, or a loose buckle
  Replace immediately if you find any.
- [ ] Re-fit check after a haircut, weight change, or if it's been passed to a different rider
  A fit that was snug before may now be loose.