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Seal of the House of Representatives of Massachusetts - Color Changing Coffee Mug

Seal of the House of Representatives of Massachusetts - Color Changing Coffee Mug

100 in stock

Regular price $17.99 USD
Regular price Sale price $17.99 USD
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The Seal of the House of Representatives of Massachusetts is an official emblem representing the legislative branch of the Commonwealth of Massachusetts, United States. It encapsulates the historical and symbolic aspects of the state's government within a circular design. The central image on the seal depicts three ships sailing towards a rocky coastline. This scene signifies the arrival of early settlers and the founding of Massachusetts Bay Colony in 1630. The ships also represent the maritime history and commercial prowess of the state. Around the outer edge of the seal, the motto "One Mind, One Heart" is inscribed. This phrase embodies unity and shared purpose among the representatives, emphasizing their commitment to acting as a single entity when making decisions for the people of Massachusetts. The seal was first adopted in 1780 and has undergone minimal changes since then. Its design serves as an enduring reminder of the state's rich past and ongoing dedication to democratic governance. The Seal of the House of Representatives of Massachusetts is a vital symbol of the Commonwealth, fostering civic pride and strengthening its connections with both history and contemporary legislative processes.
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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.