Helmets are available from ski supply stores or from specialty mail-order houses. Ski helmets have an impact-resistant shell and two inner layers that provide shock absorption and warmth. However, Swart says bike helmets are a safer bet because they provide better protection from the most severe collision impacts. Ski helmets, currently made only in Europe and Canada, are designed for penetration resistance such as protection against the tip of a ski pole. But skiers care a lot about fashion, so many want a ski helmet so they don't look funny.
Ski helmets provide good protection too.
The US ski industry has been lukewarm about helmets, says Brown. I think that may be because ski helmets are one more expense in an already expensive sport. The McGraw-Hill Companies.