Japanese Fireworks Color-Changing Glass – Cold Reactive Tumbler | Made in Japan

Japanese Fireworks Color-Changing Glass – Cold Reactive Tumbler | Made in Japan Pour in a cold drink and watch the design appear. Fireworks appear as the glass chills below 17 °C (63 °F). A delightful, Japan-made gift that surprises with every sip. Made in Japan Cold Reactive Thermochromic Ink Gift Box Included Hand-wash *Image for illustration. Color intensity varies with temperature and lighting. How It Works Pour in a cold drink and watch the design appear. When the glass surface drops below 17 °C (63 °F), hidden fireworks motifs vividly appear. The color-change effect resets as the glass warms and reappears with the next cold pour. Perfect for everyday use and as a memorable gift with a Japanese motif. Size & Capacity Rim Diameter: approx. 62 mm (2.44 inches) Height: approx. 103 mm (4.06 inches) Capacity: approx. 325 cc (325 ml / 11.0 fl oz) Weight: approx. 165 g (5.8 oz) Material: Glass Country of Origin: Japan Packaging: Gift box included Care & Cautions Pre-cool the patterned area once before use to enhance the first activation. Hand-wash only. Do not use metal scrubbers or abrasive cleansers. Do not use in dishwashers, microwaves, or ovens. Avoid prolonged direct sunlight; the dye is UV-sensitive. Because decoration is applied by hand, position and shape may vary. Color development varies between pieces; this is part of the product’s character. Avoid strong rubbing on the transfer print to prevent peeling.