• Pacific Coastal Frontier (U.S. Army) Color Changing Coffee Mug-11oz-Go Mug Yourself
  • Pacific Coastal Frontier (U.S. Army) Color Changing Coffee Mug-Go Mug Yourself
  • Pacific Coastal Frontier (U.S. Army) Color Changing Coffee Mug-Go Mug Yourself
  • Pacific Coastal Frontier (U.S. Army) Color Changing Coffee Mug-Go Mug Yourself
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Pacific Coastal Frontier (U.S. Army) Color Changing Coffee Mug

Pacific Coastal Frontier (U.S. Army) Color Changing Coffee Mug

100 in stock

$19.99 USD
$19.99 USD
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The "Pacific Coastal Frontier" refers to a historical region of the United States that encompasses the Pacific coastline, from present-day California to Alaska. In military contexts, particularly during the 19th century, it was often referred to as the Pacific Coastal Frontier by the U.S. Army. This term underscores the strategic importance of this region due to its geographical expanse and proximity to international waters. The region was characterized by diverse landscapes ranging from coastal plains to mountainous regions, and it presented unique challenges for military operations. The U.S. Army's focus on securing and defending this frontier involved establishing forts, conducting expeditions, and maintaining peaceful relations with Native American tribes. This period also saw significant expansion of the United States, particularly with the acquisition of Alaska in 1867 and the completion of the transcontinental railroad in the late 19th century. The Pacific Coastal Frontier played a crucial role in shaping U.S. military strategy and expansion during this era. It served as a gateway to the Asian Pacific region, making it vital for trade, diplomacy, and defense. Understanding the challenges and accomplishments of the U.S. Army's management of the Pacific Coastal Frontier provides valuable insights into the development of the modern American West.
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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.