Stay warm and stylish with Women’s ’HEATTECH' Leggings, UNIQLO's essential thermal base layer designed for cold-weather comfort and versatility. Engineered with advanced ’HEATTECH' technology, these leggings trap body heat and convert moisture into warmth, delivering lightweight insulation without added bulk. The stretchy fabric ensures a sleek, flattering fit that moves with you, making them ideal for layering under dresses, skirts, or pants. Whether you're heading out for a winter walk or lounging indoors, these thermal leggings offer reliable warmth and everyday easy style.

- ’HEATTECH' Thermal Technology: Converts body moisture into heat for consistent insulation.
- Heat-Retaining Lightweight Fabric: Keeps warmth close to the skin without compromising comfort.
- Moisture-Wicking: Prevents overheating and keeps you feeling dry throughout the day.
- Soft and Stretchy: Offers a snug, flexible fit without constricting.
- Sleek Silhouette: Smooth finish ideal for layering under clothing.
- Versatile Thermal Base Layer: Perfect for winter outfits, travel, or indoor wear.

Compare 3 Types of 'HEATTECH' Fabric:

'HEATTECH'
- Lightweight yet warm, ideal for everyday layering.
- Recommended for 41 °F to 68 °F for mild winter days or cozy indoor wear.

'HEATTECH' Extra Warm
- About 1.5× warmer than original 'HEATTECH', offering added insulation without bulk.
- Perfect for colder days with recommended temperatures from 23 °F to 59 °F.

'HEATTECH' Ultra Warm
- Our warmest option, approximately 2.25× warmer than original 'HEATTECH'.
- Designed for more extreme cold with a recommended range of –4 °F to 50 °F.