You've seen the yellow rubber Lance Armstrong bracelets, the red blood donor bracelets,and the pink cancer research bracelets.

Now there's a royal blue bracelet, and it supports Israel.

The "Yad Chazaka" bracelets, Hebrew for "strong hand," are being sold by Lauren Wilkowski, 11, and Gilad Katz, 12, of North Woodmere, New York.

Noticing how teens collected the colorful wristbands, their fathers suggested that Gilad and Lauren create one for Israel as a bar and bat mitzvah project.

"We chose the motto, Yad Chazaka, because Israel needs a strong hand to survive," says Gilad's father, Stuart Katz.

Gilad's and Lauren's dads used their own funds to purchase the blue bracelets.

So far, more than 30,000 wristbands have been sold--a figure they hope will double by the time this article is printed. All proceeds from the $1 bracelet benefit a wide range of Israeli charities.