About this design
Zeichen 108-21 - Gefälle StVO 2017
Zeichen 108-21 - Gefälle StVO 2017 (Germany) (Road Sign) Color Changing Mug 11oz
This design is a crisp, flat-vector rendering of the German downhill-slope warning sign, Zeichen 108-21, as set out under the StVO 2017 road traffic regulations.
Visual Elements & Composition
The sign is built from a single equilateral triangle with a rounded-corner outline in red, enclosing a large white field. White dominates the composition, with red framing the edge and black drawn as the gradient itself. Inside the triangle, a black slope rises to the left, and the percentage sign reading 21% sits clearly within the white field. Nothing decorative competes with these elements: the shapes are flat, the lines are sharp, and the contrast is strong enough to read at a glance.
Meaning & Symbolism
Zeichen 108-21 warns motorists that the road ahead drops steeply, and the 21% figure tells them exactly how steep. The triangle is the universal shape of warning on German roads, and the red border signals caution while the white field keeps the message legible. Under the StVO 2017 regulations, the sign is a standard piece of road infrastructure, so the artwork documents a precise element of German traffic law and its visual language of immediate recognition.
Shaped for the Mug
A mug is turned in the hand and read at close range, so a sign built for quick glances across a road suits it well. The triangle sits squarely on the curved body, and the slope and numerals stay sharp as the cup rotates. Pour in something hot and the design shifts from faint to fully revealed, a small reminder that even a steep gradient can arrive in a surprise.
- Theme
- Road Sign
- Place
- Germany
- Printed
- When you order it
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.
- Daily routine: fill with any hot beverage to reveal your chosen artwork.
- Gifting: the “magic” reveal makes it a memorable present for birthdays, holidays, or office exchanges.
- 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.