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Just like running shoes differ from hiking boots, snow helmets are different from bike or skateboard helmets. They are made to handle the toughest obstacles you'll find on the mountain: trees, hard ice, gravity and the elements. They have unique features such as ear coverage, moisture-wicking liners and temperature-sensitive materials.
Components
The
shell, or outer layer of the helmet, is a rigid surface that protects the head against sharp objects, knocks and abrasions. It also helps spread impact energy over a larger portion of the helmet.
The
inner lineris typically made from EPS (expanded polystyrene) foam, the stuff that looks like Styrofoam®. It's designed to absorb impact and prevent brain injuries.
Important: In a hard fall, the liner foam can get compressed, which you may or may not be able to see. A helmet should always be destroyed and replaced after a fall. It has given its life to protect yours (which is sad, but you'll get over it).
Types of Construction
In-moldhelmets are made by molding the shell and the shock-absorbing EPS foam in one molding process. They are sleek and much lighter than injection-molded helmets.
Injection-moldedhelmets use an EPS foam bonded to a separate shell, usually made of high-impact ABS plastic. These helmets offer more durability against everyday knocks and falls, but similar impact protection.
Some helmets have detachable ear pads and liners for adjustable warmth in different conditions.
If possible, try on helmets at an REI store to find one that is most comfy. Your goal is to make sure it fits your head right and sits on your noggin correctly for best protection. Tip: Bring your goggles with you to the store and try them on with the helmet.
Find Your Size
You can do so by measuring your head or, if at your REI store, just by trying on sizes. If using a tape measure, position it just above the ears and about ½" above your eyebrows. Measure around the longest part of your head (keeping the tape level) to determine the circumference of your head. Look at the chart on the helmet packaging to fit your size.
Check the Fit
A good helmet should fit snug, but not tight. If the helmet can rock back and forth the fit is too loose. Shake your head from side-to-side. If the helmet shifts, try a smaller size, adjust the sizing mechanism or use thicker sizing pads. Push up the front and back edges. If they move, tighten the straps.
There should be no gap between the top of your goggle and the helmet. Make sure there is a snug fit to the top of the goggles, but not so low that it hinders vision or pushes down the goggles.
The helmet should be positioned low enough in the front to protect your forehead. It should sit level with its front edge no more than 1" above the eyebrows.
Finally, check to make sure there are no gaps between your head and your helmet lining (insert a cheap joke here if you'd like).
Interior Sizing Pads
Any combination of pads can be used to fine-tune the helmet's fit.
Chinstrap/Buckle
The chinstrap needs to fit back against the throat so it will not come off when it is impacted. The strap should fit snugly, but be loose enough for you to be able to chew food without feeling choked or pinched. Always fasten the strap before riding.
Venting
Vents bring cool air in and sweaty, heated air out. Some helmets have removable plugs, which means you need to take your helmet off to adjust the airflow. More desirable are helmets with adjustable vents. With the flip of a lever you can instantly fine-tune your airflow level and not interrupt your ride.
Audio
Some helmets come with built-in speakers that let you turn your helmet into high-tech central for your MP3 player, cell phone or walkie-talkie. For others, just add ear pads and you're ready to rock.
Liners
Detachable ear pads and drop liners let you customize how much warmth you need. Removable liners can be washed, which is nice after a bomber day on the mountain.
Goggle Compatibility
Most helmets now allow for direct attachment of your goggles, but they accomplish this in several ways. Read the helmet's instructions or, if at an REI store, ask an REI sales specialist for assistance.
Hard Case
A hard storage/travel case (which is sold separately) helps keep your helmet looking shiny and new.
ABS—Acrylonitrile Butadiene Styrene, a high impact plastic.
EPS—Expanded polystyrene, the stuff that looks like Styrofoam®.
Injection molded—EPS foam is bonded to a separate shell.
In-mold—Molding the shell of helmet and the shock absorbing foam in one molding process.
Venting—The holes in the helmet that allow air to flow in and out.
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ou don't have to ski the trees or catch big air on your board to appreciate a helmet. In fact, all of us skiers and riders can enjoy the added safety and warmth that a snow helmet provides. You gotta admit that helmets save lives and injuries. And most of the new ones feel great and look pretty cool, too.
