Home / Color Changing Coffee Mugs / Pacific - Western Rim (1989) (Map) Color Changing Mug 11oz
  • Pacific - Western Rim (1989) (Map) Color Changing Mug 11oz Default Title 11oz - Go Mug Yourself
  • Pacific - Western Rim (1989) (Map) Color Changing Mug 11oz - Go Mug Yourself
  • Pacific - Western Rim (1989) (Map) Color Changing Mug 11oz - Go Mug Yourself
  • Pacific - Western Rim (1989) (Map) Color Changing Mug 11oz - Go Mug Yourself
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Pacific - Western Rim (1989) (Map) Color Changing Mug 11oz

Pacific - Western Rim (1989) (Map) Color Changing Mug 11oz

100 in stock

$17.99 USD
$17.99 USD
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Pacific - Western Rim (1989) - Color Morphing Mug Design

This is a map of the Pacific's western edge, drawn in 1989 and built around the meeting point of open ocean and land.

Visual Elements & Composition

The ocean fills most of the field, and the coastlines curve around the edges of the sheet like a rim. Continental outlines and island chains sit along the western side, with the water left open and uninterrupted in the centre. The layout is orderly and cartographic: fine coastal lines, clean labels, and a quiet palette that lets the geography carry the image. Nothing decorative competes with the shapes of the land.

Meaning & Symbolism

A western rim map is a picture of where the land stops and the sea begins. The Pacific's western margin is a string of coastlines, archipelagos and sea lanes, and the map collects them into one frame so the eye can follow the edge from end to end. Dated 1989, it belongs to a period when printed charts still carried most of the work of showing the world, and it reads as a record of how that edge was understood at the time.

Reading the Map in Your Hands

The image is hidden when the mug is cold and only fully surfaces once a hot drink is poured in. The map therefore arrives in stages, the way a chart does when you unfold it and start tracing a coastline. A mug is turned and studied over a morning, so the rim of the map keeps coming back into view as the coffee warms, which suits a design built entirely around its edges.

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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.