How to Choose a Bike Helmet

Triple certified for skiing, climbing and biking, the Mammut Haute Route climbing/bike/snow helmet keeps things simple so you'll only need one helmet for your days out playing in the mountains.




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Imported.
| Best Use | Snowsports Climbing Mountain Biking |
|---|---|
| Helmet Style | Snow Climb Mountain Bike |
| Helmet Construction | Hybrid |
| Shell Material | Polycarbonate |
| Head Circumference | 51-55 CM: 20-21.6 inches 55-59 CM: 21.6-23.25 inches 59-63 CM: 23.25-24.8 inches |
| Vents | 18 |
| Visor/Brim | Yes |
| Weight | 51-55 CM: 12 ounces 55-59 CM: 13 ounces 59-63 CM: 14 ounces |
| Gender | Unisex |
| Sustainability | Contains recycled materials |
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I already own a Mammut climbing helmet that fits somewhat large. I’m a 58 cm head circumference and already own the medium version of the Mammut climbing helmet. Thinking the sizing should be spot on I ordered the 55-59 cm size of this helmet. I couldn’t even get it on my head all the way. I don’t understand why the sizing would be so off.
If have a big head like me then this is the helmet for you! It's tough for me to find helmets for my big ol dome but this thing is super comfy with no pressure points so long stints wearing this helmet are actually nice. Definitely encourages me to keep a helmet on at the crag!
Circumference is 59cm so I went with L because I know mammut's sizing is a bit small for its stated size usually...This helmet is HUGE. Sizing seems a bit off from the rest of Mammut's line. Word to the wise, try on before you buy...
The helmet lightweight. It has great ventilation and has a sleek design. The headlamp attachment points are great. The keep the headlamp in place.