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PSU 307 (U.S. Coast Guard) Color Changing Coffee Mug

PSU 307 (U.S. Coast Guard) Color Changing Coffee Mug

100 in stock

Regular price $17.99 USD
Regular price Sale price $17.99 USD
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The PSU 307 refers to a specific Professional Studies course offered by the University of Southern California (USC). The acronym "PSU" stands for Professional Studies Units, which are credit-bearing courses designed for working professionals who may need to supplement their academic background or fulfill specific educational requirements. The PSU 307, specifically, is a course associated with the United States Coast Guard (USCG). It's likely that this course focuses on subjects relevant to the USCG, such as maritime law, navigation, safety procedures, and operational policies. However, for a comprehensive understanding of the exact content covered in PSU 307, it is recommended to consult official course descriptions provided by the University of Southern California. The course is offered by the University of Southern California's Professional Studies program, which aims to provide flexible learning opportunities for adult students who may be balancing work and family commitments alongside their studies. The USCG-focused PSU 307 is one example of how this program caters to specific professional needs in various industries.
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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.