Spiteful Optimism Club Magic Mug

At first glance, it looks like a sleek black mug—but pour in something hot, and the magic begins. As the mug heats up, it transforms before your eyes, revealing your custom design, funny photo, or meaningful message against a bright white background. Made with a special heat-sensitive coating, this colour-morphing mug is always a crowd-pleaser, perfect for surprising friends, gifting, or making your morning coffee a little more fun.

• Available in 325 ml (11-ounce) or 443 ml (15-ounce)
• Dimensions:
  • 325 ml (11-ounce): 8.1 cm diameter x 9.7 cm height (3.2” D x 3.8” H)
  • 443 ml (15-ounce): 8.6 cm diameter x 11.4 cm height (3.4” D x 4.5” H)
• Strong, ceramic construction
• Hand wash; microwave and dishwasher are not recommended due to the special, heat-sensitive coating that gives this mug its magic
• Do not overfill and be careful with hot liquids that may scald
• Keep out of reach of children when filled with hot liquid