Home / Color Changing Coffee Mugs / Flag of Nerima Tokyo Japan - Color Changing Mug 11oz
  • Flag of Nerima Tokyo Japan - Color Changing Coffee Mug 11oz - Go Mug Yourself
  • Flag of Nerima Tokyo Japan - Color Changing Coffee Mug - Go Mug Yourself
  • Flag of Nerima Tokyo Japan - Color Changing Coffee Mug - Go Mug Yourself
  • Flag of Nerima Tokyo Japan - Color Changing Coffee Mug - Go Mug Yourself
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Flag of Nerima Tokyo Japan - Color Changing Mug 11oz

Flag of Nerima Tokyo Japan - Color Changing Mug 11oz

100 in stock

$17.99 USD
$17.99 USD
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Flag of Nerima Tokyo (Japan) - Color Morphing Mug Design

This design reproduces the official municipal emblem of Nerima, one of the 23 special wards of Tokyo, as a single, confident mark.

Visual Elements & Composition

Dark purple fills most of the field, with white taking the remaining share as the counterform that defines the shape. The emblem is built from a stylized letter R fused with a star, so the two readings sit inside one silhouette rather than beside each other. The linework is flat and vector-clean, with balanced, symmetrical geometry and no shading or texture. Nothing else competes for attention: there are no captions, numerals or background details, just the mark itself at high contrast.

Meaning & Symbolism

The emblem is a civic identity mark, designed to stand for the ward itself the way a crest stands for a town. Its structure follows the logic of Japanese mon, where a simplified form carries a whole place's identity in a shape small enough to repeat on signs, documents and uniforms. The R anchors the name of the ward, and the star adds a point of focus that keeps the composition from feeling static. The result is orderly and understated, a piece of urban iconography that reads as modern while honouring a formal, historical tradition.

Cast in the Color-Changing Mug

A mug is turned in the hand, so the emblem rotates through view as you drink, and the handle sits at the side of the mark rather than across it. The design is faint when the mug is cold, then resolves as a hot drink is poured in, so the emblem emerges gradually, the way a crest comes into focus once you look closely. It makes a quiet, cheeky reveal for anyone who likes their Japanese heraldry with a little theatre.

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.