Smith Optics Hardline Carbon Mips Full Face MTB Cycling Helmet











- Complete KOROYD® coverage for lightweight, energy-absorbing and ventilated impact protection
- Mips® Safety System reduces rotational forces caused by angled impacts to the head
- Collarbone impact protection zone disperses force on impact during a crash to aid in reducing collarbone injuries from the edge of a helmet
- Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older as well as EN 1078, CPSC, AS/NZS2063, and ASTM F1952 downhill certified
- Two washable cheek pad kits, two crown liners and two neck rolls let you fine tune the fit
- D-ring chin strap fastener for a snug fit
- Designed for ultimate integration with Smith performance goggles for maximum comfort, venting and storage convenience
- AirEvac ventilation system integrates with Smith goggles for fog-free lenses
- Adjustable break-away visor
- Under-visor POV camera mount compatible
- Iconic+® anti-bacterial performance lining for odor resistance
- Weight (Size M): 32 oz / 910 g
Occasionally, without notice, manufacturers change product design and/or specifications.
Smith Helmet Size Guide
Use the below chart and guide to find the correct size Smith helmet for you.
|
|
Head circumference (cm) |
|
S |
51 - 55 |
|
M |
55 - 59 |
|
L |
59 - 63 |
|
XL |
63 - 67 |
How to measure
To find the circumference of your head, place a tape measure in the centre of your forehead, wrap it around above your ears and around the back of your head. If there's a slight difference between two different sizes, always go for the tighter size.

Once you know the circumference of your head, see the available sizes shown on the product and select the appropriate one.
The majority of cycling helmets have some form of adjustment for size, usually in the form of a ratchet adjuster to tighten or loosen the straps, some helmets will also come with different thickness pads to further customise the fit.
Read our clothing size guide for more information on sizing.
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