Grifiti Mood Mouse Pad Liquid Crystal Heat Sensitive Color Changing Better than ever! Heat sensitive color changing mood mouse pad. This reacts to a temperature range, not just touching! It is heat sensitive to a range around room temperature so if the pad is cold or you are cold it won't react. Liquid crystals change from black to blue, green, and red with heat Ultra thin mouse pad for ergonomic mousing this does NOT have a open cell rubber backing but rather a very thin non-skid coating for low profile ergonomic feel If is for kids and adults that like toys because it is just that! It's meant for to make you laugh and have a little fun in life. Be sure to remove the plastic packaging and base plastic skin so that the heat sensitivity and non-skid surface work well!