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  • CAL FIRE - Color Changing Coffee Mug 11oz - Go Mug Yourself
  • CAL FIRE - Color Changing Coffee Mug - Go Mug Yourself
  • CAL FIRE - Color Changing Coffee Mug - Go Mug Yourself
  • CAL FIRE - Color Changing Coffee Mug - Go Mug Yourself
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CAL FIRE - Color Changing Mug 11oz

CAL FIRE - Color Changing Mug 11oz

100 in stock

$17.99 USD
$17.99 USD
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CAL FIRE - Color Morphing Mug Design

This design takes its name from CAL FIRE, California's state fire protection agency, and puts that identity front and centre on a mug whose artwork stays hidden until heat brings it up.

Visual Elements & Composition

The decoration is a full colour wraparound, so the artwork runs continuously around the cup rather than sitting on a single side. When the mug is cold, the design is only faintly visible against the black exterior. Pour in a hot drink and the colours come forward against the white interior. The CAL FIRE name is the central lettering, and it is the first thing you read once the design appears.

Meaning & Symbolism

CAL FIRE is the name of the agency that handles wildfire prevention, suppression and emergency response across California's forests and communities. A design built on that name honours the crews who work the front lines through fire season. There is also a fitting irony in how the piece works: heat is what reveals the image, and on this mug heat is exactly what brings the design forward.

Life with a Color Morphing Mug

A mug gets picked up, turned and set back down many times a day, so a design that changes with the drink is one you see again and again. The reveal happens in your own hands. The morning coffee brings the artwork up, and as the mug cools it returns to its black-and-white base, ready for the next pour. It makes a gift with a bit of a trick to it, the kind that shows its full face only after the first cup.

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.