The nearly-naked runners say it was all for a good cause. They each had to raise at least $250 for charity in order to take it off and participate.
Speedo Santas bare it in Boston
BOSTON, MA Plenty of Santa impersonators weren't exactly wearing the big man's traditional suit.
In fact, they weren't wearing much at all.
Some 500 men and women put on swimsuits, Santa hats, and not much else.
They then raced through the streets in below freezing temperatures.