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Flag of Koganei Tokyo Japan - Color Changing Mug 11oz

Flag of Koganei Tokyo Japan - Color Changing Mug 11oz

100 in stock

Regular price $17.99 USD
Regular price Sale price $17.99 USD
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Flag of Koganei Tokyo (Japan) - Color Morphing Mug Design

This design turns the official flag of Koganei, Tokyo into a single, confident emblem built from one Japanese character and a blossom.

Visual Elements & Composition

Red and white do all the work here. Red covers roughly a quarter of the design and white the rest, so the emblem reads clearly at a glance. The centrepiece is the kanji 小 (ko), drawn in a flat vector style and shaped so that its strokes open into the form of a cherry blossom. A crescent ring and pointed leaf motif frame the figure, and the whole arrangement sits on a circle and oval geometry. Nothing is decorative for its own sake. Every line is there to hold the character and the flower together.

Meaning & Symbolism

The character ko is the first character of Koganei's name, so the emblem places the city's identity at its centre. The cherry blossom brings in the nature-inspired iconography that Japanese family crests, or mon, have used for centuries. The municipal symbol was officially adopted on October 1, 1958, which makes it a modern civic mark rooted in older heraldic traditions. It stands as a formal sign of regional heritage and local pride, and it shows how written language and the natural world can share a single shape.

Reading the Blossom in Your Hand

A mug is held and turned, so the emblem is seen in parts: the ring on one side, the blossom curving toward the handle, the character rising as the cup is lifted. Pour in something hot and the artwork resolves into its full shape, which suits a flag built on a single clear symbol. Set it on the table, and the blossom is the first thing anyone sees.

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.