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

Flag of Kawasaki Kanagawa Japan - Color Changing Mug 11oz

100 in stock

$17.99 USD
$17.99 USD
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Flag of Kawasaki, Kanagawa Japan - Color Morphing Mug Design

This is the civic flag of Kawasaki, a city in Kanagawa Prefecture, Japan, set edge to edge across the full wrap of the mug.

Visual Elements & Composition

The flag works as a single, flat graphic: a bold field with its central emblem held in the middle of the surface. Nothing competes with it. Because the artwork wraps around a round vessel, the emblem and its edges curve with the cup, so the design reads as one continuous image rather than a panel stuck to the side. Its simplicity is the point. Flags are built to be recognised at a glance, and this one keeps that clarity on a small object you hold in your hand.

Meaning & Symbolism

A municipal flag like this one is a shorthand for a place. Its colours and emblem were chosen to represent the city's identity, its civic pride, and the community that lives under it. Kawasaki sits between Tokyo and Yokohama, on the Tama River, and has grown from a industrial and port town into a major urban centre. Carrying its flag on a mug turns a symbol of local government into something personal, the kind of thing a person from Kawasaki, or someone who has spent time there, would reach for every morning.

Made for the Hand, Revealed by Heat

A mug is turned in the hand, so the design is never seen all at once. You see the emblem as you lift the cup, and the rest of the flag comes round as you rotate it. The design is faint when the mug is cold and comes up fully once a hot drink is poured in, so the flag appears as the coffee or tea warms the cup. That reveal suits a flag well: a symbol that surfaces slowly, the way a place becomes familiar the longer you spend time with 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.