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Add hot liquid to reveal your design as the black mug turns white.
£18.95
per mug
 

Penguin Mug

4.8 out of 5 stars rating
92 Total Reviews |
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Color Morphing Mug
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Style: Color Morphing 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

About This Design

Add hot liquid to reveal your design as the black mug turns white.
Penguin Mug

Penguin Mug

Penguin Mug for everyone! © 2010 Rat Dog Ink
Rat Dog Ink
Pro
Artwork designed by
Los Altos, California, United States
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Customer Reviews

4.8 out of 5 stars rating92 Total Reviews
74 total 5-star reviews15 total 4-star reviews2 total 3-star reviews1 total 2-star reviews0 total 1-star reviews
92 Reviews
Reviews for similar products
5 out of 5 stars rating
By Margo O.22 September 2017 • Verified Purchase
Classic Mug, 325 ml
Creator Review
At first I thought that there was something wrong with my cup. I realized that my cup shows the design after I put my favorite coffee in the cup. I love it! The colors came out great.
from zazzle.com (US)
5 out of 5 stars rating
By Anonymous18 October 2025 • Verified Purchase
Classic Mug, 444 ml
Very pleased with the customised mug and loved the flexibility with design and ability to change position of pattern and font size etc.
4 out of 5 stars rating
By Alisa K.27 December 2018 • Verified Purchase
Classic Mug, 325 ml
Zazzle Reviewer Program
Product came as i had ordered it and would happily say, with out a scratch on the item. I believe my brother will be happy getting this soon. I love the fact that customers have the ability to customize most products and i am happy to say that it 90% always going to work for people. I'd say the image/rose gold sparkle part is a little more darker and duller, but overall I see nothing wrong whit it.

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penguinmugcupcoffeeteakitchenfoodbeverages

Other Info

Product ID: 168268820650752076
Created on 13/08/2010, 11:47
Rating: G