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Flag of Kumamoto Prefecture Japan - Color Changing Mug 11oz

Flag of Kumamoto Prefecture Japan - Color Changing Mug 11oz

100 in stock

Regular price $17.99 USD
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Flag of Kumamoto Prefecture (Japan) - Color Morphing Mug Design

This is the official flag of Kumamoto Prefecture, a bold white emblem set on a deep wine-red field, and it is about as clean as regional flags get.

Visual Elements & Composition

Deep maroon covers roughly two-thirds of the design, with white taking up the rest at the centre. The emblem is a stylized katakana character, ク (ku), the first syllable of "Kumamoto." Its curves and angles are drawn so the character also suggests the outline of Kyushu, the island on which the prefecture sits. Everything is flat and geometric, with no shading or texture, so the white shape reads instantly against the red.

Meaning & Symbolism

The emblem is built around two ideas. The character anchors the flag in the prefecture's name, and the outline of Kyushu marks its place on the map. The circular arrangement of the emblem stands for the unity and harmonious progress of its citizens. The flag was adopted on July 23, 1966, and it serves as a formal symbol of regional identity and local heritage, which is why it still feels so deliberate today.

Made for the Hand

A mug is turned slowly in the hand, so the flag is seen in fragments before it is seen whole: the red field first, then the white emblem as the cup rotates. The design is printed as a full wraparound, so the emblem follows the curve of the mug from every angle. Pour in something hot and the design comes alive, revealing the artwork as the cup warms. It makes a thoughtful gift for anyone with ties to Kumamoto, or for anyone who loves a clean, confident symbol with a story behind it.

Size

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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.