Hot Cold Mug

Charles & Marie are having a pre-sale of their Hot Cold Mug. The mug is made with a heat sensitive pigment that causes it to turn from black to white as it heats up. So, it starts by reading "COLD", and after you fill it up with a hot liquid, the text turn into "HOT". Clever, eh? The Hot Cold Mug is a spin off of Charles & Marie's On Off Mug.
Available for pre-sale here.















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