Description About our Gender reveal magic mug coffee cup it’s a Boy Because of its heat-sensitive coating, which reacts to the heat, the mug changes its color from black to white . When the mug is cold, it is black and the image is Slightly noticeable. When filling the Gender reveal magic mug coffee cup it’s a Boy with hot drinks – tea, coffee, milk or water, its color becomes lighter and the printed image gradually appears. The outcome is hidden beneath the black outside coating which disappears to reveal the hidden message when hot liquid is added.. Makes a great Gender Reveal or Baby Shower gift. Can be personalised to your own unique taste at no extra cost Artwork is slightly visible when cold
