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Flag of Mannheim Germany - Color Changing Coffee Mug

Flag of Mannheim Germany - Color Changing Coffee Mug

100 in stock

Regular price $19.99 USD
Regular price Sale price $19.99 USD
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This Flag of Mannheim Germany - Color Changing Coffee Mug is a unique addition to any coffee lover's collection. Inspired by the official flag of Mannheim, Germany, this mug showcases the city's vibrant history and cultural heritage. The design features the city's coat of arms, which includes the three towers symbolizing the city gates, and the intertwined roses representing the two cities that unified to form Mannheim. As you pour in your favorite beverage, the mug transforms, revealing the colors of the flag in a subtle yet captivating way. This coffee mug is perfect for anyone who appreciates unique and cool drinkware, as well as for those with a special connection to Mannheim or Germany.

This color-changing coffee mug serves as an excellent conversation starter and a thoughtful gift for someone who cherishes the German city of Mannheim. Whether you're sipping your morning coffee or enjoying a hot beverage in the evening, this mug adds a touch of elegance and charm to your daily routine. Its construction ensures durability and longevity, making it a reliable choice for everyday use. So, raise your cup and celebrate the beauty of Mannheim with this remarkable color-changing coffee mug.

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.