Get a little hot under the collar with this Heat Changing Love Mug! Simply fill with your partners favourite hot beverage and watch as the thermochrome outside slowly changes the hearts pattern into an I Love You message! An ideal flirty gift for valentines or an anniversary to show your sensitive side! Just be warned it may mean you will be on tea/coffee duty for a good while afterwards! Gender: Unisex. Age Group: Adult. Material: Other Material.