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Flag of Rostock Germany - Color Changing Mug 11oz

Flag of Rostock Germany - Color Changing Mug 11oz

100 in stock

Regular price $17.99 USD
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Rostock, Germany - Color Changing Coffee Mug Design

Start your day with the spirit of Rostock! This captivating mug design brings the iconic flag of this historic German city to life. When filled with a hot beverage, the mug undergoes a transformation, revealing the vibrant visual elements of the Rostock flag.

Flag of Rostock: A Visual Celebration

The design prominently features the core components of the Rostock flag. Two horizontal stripes, representing the city's colors, dominate the visual landscape. The upper stripe, a rich blue, evokes the serenity and expanse of the sea, a significant aspect of Rostock's coastal heritage. Beneath, a golden yellow stripe adds a touch of warmth and prosperity, reflecting the city's vibrant character and rich history.

The Griffin: A Symbol of Strength and History

At the heart of the design, the majestic griffin, Rostock's heraldic emblem, takes center stage. This mythical creature, a powerful blend of lion and eagle, symbolizes strength, vigilance, and the city's historical significance. The griffin, carefully rendered in detail, provides a focal point, grounding the design in Rostock's rich past.

This design is a visual ode to Rostock, embodying the city’s identity and pride in its cultural heritage.

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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.