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Flag of Sendai Miyagi Japan - Color Changing Mug 11oz

Flag of Sendai Miyagi Japan - Color Changing Mug 11oz

100 in stock

Regular price $17.99 USD
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Flag of Sendai Miyagi Japan - Color Morphing Mug Design

This design reproduces the flag of Sendai, the regional capital of Miyagi Prefecture on Japan's northeast coast, as a single bold emblem.

Visual Elements & Composition

A flag is built for distance, so its design works through flat fields of colour and a few clear shapes. Here the flag fills the whole frame with no border or background clutter, so nothing competes with the emblem at its centre. Its simplicity is the point: a civic flag has to be recognised at a glance from across a street or a stadium, and this one holds its composition with confidence.

Meaning & Symbolism

Sendai's nickname, the City of Trees, is tied to the zelkova-lined avenues that run through the centre and to the green belt the city has long protected. A municipal flag like this one carries that civic identity in compact form, telling residents and visitors what the city considers worth representing. Flags of this kind were typically adopted to mark local pride and to give the city a visual identity of its own within Japan.

Made for the Hand

A mug is turned slowly in the hands and seen from every side, so the design wraps around the cup rather than facing one viewer. The image sits where a morning coffee meets the lip, and the heat-reactive surface brings the artwork forward as the drink warms, so the flag appears gradually instead of all at once. It suits a person who keeps a Sendai connection close, whether that is a hometown, a favourite visit, or a friend who has made the city their own.

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.