Wearing a proper fitting, Consumer Product Safety Commission (CPSC) certified helmet could prevent 85 percent of cyclists' head injuries. [The Bicycle Helmet Safety Institute]

• Newer helmets have retention system with a dial in the back to adjust fit.
• Most made of expanded polystyrene foam or EPS (like what's found in picnic coolers) covered with a tough-but-thin plastic shell
• EPS foam is single-use -- it doesn't recover from being crushed.

Lower-priced helmets are often one-size-fits all; you adjust an internal strap to get the helmet snug.

Higher-priced helmets are available in a range of sizes.

Front edge of helmet should sit one to two finger widths above eyebrow

Helmet should sit level. If helmet tips back and exposes your forehead you are not protected

Helmet should be SNUG. Connect the chin strap, and tighten it so that it's snug beneath your chin-you should barely be able to fit a finger between the strap and your chin. Adjust the side straps so that the point of the V sits just below your ears.

Try wearing a light weight-beanie / skull cap under helmet to help keep coil and processor in place.

Benefits of a proper fitting ski helmet:

• Safety - Studies show that wearing a helmet can reduce head injuries sustained while skiing by 60%
• Implant / hearing device protection
• Added warmth
• Helmets with mesh ear flaps help to secure the hearing device and may make hearing through a helmet easier

For other snow sports including cross country skiing, look for ski hat that ties under chin