Skip to product information
1 of 5

Flag of Yokohama Kanagawa Japan - Color Changing Mug 11oz

Flag of Yokohama Kanagawa Japan - Color Changing Mug 11oz

100 in stock

Regular price $17.99 USD
Regular price Sale price $17.99 USD
Sale Sold out
Shipping calculated at checkout.

Flag of Yokohama, Kanagawa - Color Morphing Mug Design

This is the flag of Yokohama, the port city on Tokyo Bay in Kanagawa Prefecture, Japan, presented as a single, confident emblem on a plain field.

Visual Elements & Composition

The flag is built from a few bold shapes rather than fine detail, so its outline reads clearly from across a table. Its layout is centred and balanced, with the emblem sitting at the heart of the field and nothing competing for attention. On a mug the composition wraps around the body, so the flag is seen whole from the handle side and then carries around to the front as you turn the cup.

Meaning & Symbolism

A city flag is a civic signature. It says where you are and who belongs to that place. Yokohama grew from a fishing village into one of Japan's great international harbours after its opening to foreign trade in the 1850s, and its flag carries that identity of a port that looked outward to the world. Choosing it for a mug ties the object to a specific place rather than a generic travel motif.

Made for Hot Drinks

The design is hidden when the mug is cold and comes up as the cup warms, so the flag appears only once a hot drink goes in. That makes the reveal part of the ritual: the first pour of coffee or tea brings the emblem into view, and the mug is turned in the hand to watch it appear. It is a good match for a Yokohama connection, a small surprise that arrives with the first sip of a morning routine.

Size

Bulk Discounts Available

These discounts apply to all products.

Buy 2
10% OFF
Buy 3+
20% OFF
Buy 5+
30% OFF
Buy 10+
40% OFF

Automatically applied at checkout.

View full details

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.