This clever colour changing egg timer is the secret to perfect boiled eggs every time simply pop it in the pan with your eggs as they boil it reacts to the heat changing colour to show how well done they are clear indicators show when eggs are soft medium and hard boiled when your eggs just the way you like it take it out and enjoy heat sensitive design means eggs are always deliciously done no matter the temperature of water or number of eggsmade of food safe polyresin