Home / Color Changing Coffee Mugs / Morris Island, South Carolina. Headquarters of Field Officer of the Trenches. Second Parallel (U.S. Civil War) Color Changing Mug 11oz
  • Morris Island, South Carolina. Headquarters of Field Officer of the Trenches. Second Parallel (U.S. Civil War) Color Changing Coffee Mug 11oz Default Title 11oz - Go Mug Yourself
  • Morris Island, South Carolina. Headquarters of Field Officer of the Trenches. Second Parallel (U.S. Civil War) Color Changing Coffee Mug 11oz - Go Mug Yourself
  • Morris Island, South Carolina. Headquarters of Field Officer of the Trenches. Second Parallel (U.S. Civil War) Color Changing Coffee Mug 11oz - Go Mug Yourself
  • Morris Island, South Carolina. Headquarters of Field Officer of the Trenches. Second Parallel (U.S. Civil War) Color Changing Coffee Mug 11oz - Go Mug Yourself
  • Morris Island, South Carolina. Headquarters of Field Officer of the Trenches. Second Parallel (U.S. Civil War) Color Changing Coffee Mug 11oz - Go Mug Yourself
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Morris Island, South Carolina. Headquarters of Field Officer of the Trenches. Second Parallel (U.S. Civil War) Color Changing Mug 11oz

Morris Island, South Carolina. Headquarters of Field Officer of the Trenches. Second Parallel (U.S. Civil War) Color Changing Mug 11oz

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$17.99 USD
$17.99 USD
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Morris Island, South Carolina: Field Officer Headquarters and Second Parallel - Color Morphing Mug Design

This design takes you into the Union siege lines on Morris Island, where the trenches crept toward Confederate Fort Wagner during the Siege of Charleston.

Visual Elements & Composition

The artwork is built around two subjects: the headquarters of a field officer of the trenches and the second parallel. The headquarters anchors the scene as the command point, while the second parallel runs as a network of trench lines that organises the eye across the composition. Read as a plan of advancing earthworks, the layout shows the ground being worked step by step toward the enemy.

Meaning & Symbolism

Morris Island is a small barrier island at the entrance to Charleston Harbor, and during the U.S. Civil War it was strategically vital to the Union Army. From its batteries, Union forces bombarded Fort Sumter and Charleston itself. Siege armies dug successive parallels to close the distance on fortifications, and each new line was dug nearer the enemy than the last. The second parallel was a frontline position where officers directed troop movements, assaults and artillery against Confederate defences. The design therefore records the methodical, grinding engineering that decided the campaign in South Carolina between 1863 and 1865.

Where the Design Meets the Mug

A mug is turned slowly in the hand, so the trench network reads as you rotate it, one line leading into the next. The heat-reactive surface does something the original plan never could: as the mug warms, the design surfaces from its faint cold state, so the trenches appear as you pour a hot drink. Few objects make a piece of military engineering come up through the morning coffee quite like this one does.

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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.