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Review on Creative Insulation Beverage Warmer Coaster by Opal Holmberg

Revainrating 1 out of 5

Doesn't get hot enough to warm the bottom of a glass mug. Not recommended

I was very pleased but very disappointed. I've been using it with multiple mugs of different styles for about a week and it just doesn't get hot enough to keep my coffee warm.

Pros
  • Isolation: Powered by any device with 5V USB output such as B. Computer, desktop, laptop, tablet, mobile power, etc., simple and convenient.
Cons
  • Only available in white