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Flag of Harburg Germany - Color Changing Coffee Mug

Flag of Harburg Germany - Color Changing Coffee Mug

100 in stock

Regular price $19.99 USD
Regular price Sale price $19.99 USD
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Experience a unique blend of coffee and German heritage with the Flag of Harburg Germany - Color Changing Coffee Mug. This mug showcases a stunning replication of the Harburg flag, which has been creatively designed to change color when hot beverages are poured inside. Perfect for anyone who appreciates unique and cool drinkware, this mug makes an excellent gift for history enthusiasts or those with a soft spot for Germany. The vibrant colors of the flag become more pronounced as coffee or tea is consumed, adding a touch of excitement to your morning routine.

The Flag of Harburg, a Hanseatic city located in the German state of Lower Saxony, features three horizontal stripes of black, white, and red. The design on this mug serves as an artistic interpretation of the original flag, making it a wonderful conversation starter. Whether enjoyed at home or in the office, this color-changing coffee mug is sure to impress and add a splash of German culture to your everyday life.

Perfect for anyone who appreciates unique and cool drinkware.

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Color-changing ceramic mugs with a glossy finish, black exterior, and white interior. Available in one size: 11 oz (≈330 ml). Heat-reactive coating reveals your custom design when filled with hot liquid. BPA- and lead-free, with a comfortable C-handle.

This mug brings a playful twist to the daily coffee or tea ritual. At room temperature, it looks like a simple black mug with a glossy finish. But add a hot beverage, and your chosen design fades into view, showing vivid colors against the white interior.

The ceramic body is durable enough for repeated use, while the C-shaped handle balances comfort and grip. Printing uses sublimation techniques that fuse color into the heat-reactive surface for crisp results when the design appears.

  • Material: ceramic with glossy black exterior and white interior.
  • Size: one standard size, 11 oz (≈330 ml).
  • Finish: glossy glaze with heat-sensitive surface.
  • Printing: sublimation process produces crisp, vibrant colors.
  • Safety: BPA-free and lead-free, suitable for everyday drinks.
  • Effect: design is faintly visible when cold, fully revealed when hot.

Perfect as a novelty gift or a fun personal mug, the heat-reactive design makes coffee breaks more engaging. It works well for morning coffee, afternoon tea, or hot chocolate.

  1. Daily routine: fill with any hot beverage to reveal your chosen artwork.
  2. Gifting: the “magic” reveal makes it a memorable present for birthdays, holidays, or office exchanges.
  3. Office use: sparks conversation while still being practical for everyday drinks.

Note: for best results, avoid designs that rely heavily on deep black backgrounds, as they may blend with the mug’s surface when cold.

Unlike standard mugs, color-changing mugs require gentler care to preserve the heat-reactive coating. Hand-wash only — avoid the dishwasher and abrasive scrubbers, which can damage the finish and reduce the effect.

The mug is safe for short microwave use when heating liquids, but repeated high-heat cycles may shorten the lifespan of the coating. Always allow the mug to cool before washing.

Available in one classic size: 11 oz (approximately 330 ml). It’s large enough for most standard coffee makers and fits comfortably in most cabinets.

Size guide

All measurements are product dimensions in inches.

11 oz
Height (in) 3.78
Diameter (in) 3.23
Diameter w/ handle (in) 4.76

Note: measurements are approximate; slight variations may occur due to manufacturing tolerances.