On TV when watching various races, you always see the competitors in helmets
and in skin tight suits.

At any hills/mountains I have skied at, some people wear a helmet, yet no
one wears those skin tight suits.

I sort of understand why, but....

I also XC Ski on various club owned trails. The clothing that racers wear,
is also seen worn by those who just ski for fun.

Why does this happen?

Micheal