Before you touch it, this Fickle FoamTM just looks like a 1/4" thick piece of foam rubber with a glossy, color-flecked surface. Touch it — and its amazing touch-sensitive liquid crystals react by changing it to beautiful rich colors with rainbow edges! As it cools, colors change to other bright colors before your eyes. Breathe on it, and your warm breath makes large colorful rings. Set a cup of hot tea on it, and bright rings of color appear around the cup. 4"x4".