"So what makes this product so innovative? A mousepad is a mousepad, right? First of all, the Icemat is made of glass. The glass surface is threatened in a special way to give a good grip on the mouseball. Along with the other gaming pads on the market the Icemat uses a slightly "coarse" surface to make the pad more sensitive to the mouse ball. The Icemat surface is very fine grained so you can`t feel the "coarse" surface with your hand but you know it`s there when playing"
FULL STORY @ OCSHOOT (http://www.ocshoot.com/icemat.htm)