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BR-379 jct (Brazil) (Road Sign) Color Changing Mug 11oz

BR-379 jct (Brazil) (Road Sign) Color Changing Mug 11oz

100 in stock

Regular price $17.99 USD
Regular price Sale price $17.99 USD
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BR-379 jct (Brazil) (Road Sign) Color Changing Mug 11oz

A flat, black-and-white road junction marker for Brazil's BR-379 highway, drawn as a single bold shield.

Visual Elements & Composition

The design uses two colours alone: black covers about a fifth of the surface and white fills the rest. A rounded-bottom shield with a pointed notch sits at the centre, framed by a double-outlined border that keeps the edge crisp. The letters "BR" sit above the numerals "379", stacked and centred so the route identifier reads at a glance. Nothing competes with the shield. The composition is symmetrical and flat, devoted entirely to that one marker.

Meaning & Symbolism

The shield is the route marker Brazil uses across its federal highway network, and "BR" places the road within that national system. The number 379 names this particular route, so the badge stands for a specific junction rather than travel in general. Its utilitarian look is deliberate. Road signs are built to be read quickly by drivers passing at speed, and the artwork keeps that clarity intact, paying tribute to how a country's roads are named and connected.

Why It Suits a Color Morphing Mug

A mug is turned in the hand and read up close, so a small sign like this has room to be seen properly. The black exterior and white interior of this mug echo the design's own two-tone palette. The playful part comes with heat: the sign stays faint when the mug is cold and rises into full view once a hot drink is poured in, like a route revealing itself mile by mile.

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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.