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Ruins of Fort Sumter, Charleston Harbor, S.C. (U.S. Civil War) Color Changing Coffee Mug 11oz

Ruins of Fort Sumter, Charleston Harbor, S.C. (U.S. Civil War) Color Changing Coffee Mug 11oz

100 in stock

Regular price $19.99 USD
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Ruins of Fort Sumter, Charleston Harbor, S.C. (U.S. Civil War) The depicted image represents the remnants of Fort Sumter, a historic coastal fortification located in Charleston Harbor, South Carolina, United States. Constructed between 1829 and 1834, this star-shaped masonry fortress served as a federal installation before it became the site of the opening shots of the U.S. Civil War in April 1861. The war began when Confederate forces under General Pierre G.T. Beauregard bombarded the fort after President Abraham Lincoln called for troops to supply the new Union-held forts in Charleston Harbor. After a 34-hour bombardment, Fort Sumter surrendered on April 12, 1861. Although it was later reoccupied by Union forces during the war, the fort was largely destroyed in the conflict and never served as an active military installation again. Today, Fort Sumter is a National Monument managed by the National Park Service and attracts thousands of tourists annually, offering a significant historical insight into the U.S. Civil War.
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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.