bicycle helmet
Rider's head armor
A bicycle helmet is a protective headpiece worn while cycling, designed to absorb impact and reduce head injuries in crashes.
Most are made of foam covered by a hard shell, with vents for airflow and straps that fasten under the chin.
Many jurisdictions require them for children: The law says kids under twelve must wear a bicycle helmet.
Inner protective covering
- strapsNarrow securing bands
- chinstrapStrap securing headgear
- buckleFrame-and-prong fastener
- polycarbonateStrong transparent synthetic polymer
MIPS · vents · visor · pads · reflective · aerodynamic · lightweight · hardshell
Forceful contact or consequence
- collisionForceful contact between objects
- concussionBrain injury from impact
- head injuryHarm to the skull
- skullHead's bone casing
brain · crash · accident · protection · road safety · traffic laws · compulsory · enforcement
Foot-operated lever
- commuteRegular work travel
- road bikeLightweight bicycle for paved surfaces
- mountain bikeBicycle for unpaved paths
- cyclocrossOff-road bicycle racing discipline
BMX · trails · handlebars · cadence · bike lane · tour · race · peloton
Movement of atmosphere
- breathablePermits air passage
- meshInterlocking open weave
- coolingLosing thermal energy
- ventsOpenings for airflow
channels · perforated · air-cooled · aerodynamic · lightweight · circulation · inlets · temperature regulation
Three-event endurance contest
- raceCompetition of speed
- time trialFastest-lap competition format
- enduranceSustained effort capacity
- athleteSports competitor
competition · sprint · road racing · criterium · velodrome · track · drafting · breakaway
liner
Inner protective covering
polycarbonate · MIPS · vents · visor · pads · reflective · aerodynamic · lightweight · hardshell · softshell
impact
Forceful contact or consequence
- collisionForceful contact between objects
- concussionBrain injury from impact
- head injuryHarm to the skull
skull · brain · crash · accident · protection · road safety · traffic laws · compulsory · enforcement · precaution
pedal
Foot-operated lever
- commuteRegular work travel
- road bikeLightweight bicycle for paved surfaces
- mountain bikeBicycle for unpaved paths
cyclocross · BMX · trails · handlebars · cadence · bike lane · tour · race · peloton · spokes
airflow
Movement of atmosphere
- breathablePermits air passage
- meshInterlocking open weave
- coolingLosing thermal energy
vents · channels · perforated · air-cooled · aerodynamic · lightweight · circulation · inlets · temperature regulation
triathlon
Three-event endurance contest
- raceCompetition of speed
- time trialFastest-lap competition format
- enduranceSustained effort capacity
athlete · competition · sprint · road racing · criterium · velodrome · track · drafting · breakaway
- headwearhat, cap, crown, hood, beanie
- sports gearbasketball, baseball, football, soccer ball, volleyball
- streamlineddolphin, shark, torpedo, submarine, bullet train
bicycle helmetmotorcycle helmet
Protective headwear for riders
motocross helmet · racing helmet · football helmet · hard hat · construction helmet
cycle, helmet, bicycle, tricycle, motorcycle, cycling, helmets, bicycles, cyclical