Last Update 2025-09-23

[Expired]Uniqlo "Heat-Generating Black Tech" HEATTECH Series

Uniqlo HEATTECH collections.
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Editor's Pick: The colder it gets, the warmer it feels. Works in temperatures from 41°F to -4°F (5°C to -20°C). Thin, comfortable, and versatile - a winter essential you can truly rely on!

HEATTECH absorbs moisture released from the body and converts the energy from these molecules into heat.

Collection Name	Features	Recommended Temperature
HEATTECH	Lightweight base layer, warm and comfortable	41°F to 68°F (5°C to 20°C)
EXTRA WARM HEATTECH	Approximately 1.5 times warmer	23°F to 59°F (-5°C to 15°C)
ULTRA WARM HEATTECH	Approximately 2.25 times warmer	-4°F to 50°F (-20°C to 10°C)

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Package lost

If the package status shows as delivered but you have not actually received it, you may contact UNIQLO customer service for assistance in investigating after searching and waiting for 2 business days. (Detailed policy).