Experience elevated warmth and softness with our Women’s ’HEATTECH' Cashmere Blend T-Shirt | Extra Warm, UNIQLO's premium thermal base layer designed for cold-weather comfort and style. Featuring advanced ’HEATTECH' Extra Warm technology, this long-sleeve tee captures body moisture and converts it into heat, delivering enhanced insulation for chilly days. The luxurious cashmere blend adds a refined touch and plush feel, while the classic crew neck silhouette makes it perfect for layering or wearing solo. Whether you're heading outdoors or relaxing indoors, this thermal T-shirt offers warmth and timeless elegance. - ’HEATTECH' Extra Warm Technology: Converts body moisture into heat for superior thermal insulation. - Designed for 23°F to 59°F: Ideal warmth range for colder conditions. - Cashmere-Blend Fabric: Adds elevated softness and warmth for a luxurious feel. - Heat-Retaining Stretch Material: Moves with your body for a snug, flexible fit. - Moisture-Wicking Properties: Keeps you dry and comfortable throughout the day. - Classic Crew Neck Design: Ideal for layering or standalone wear. - Long Sleeves for Full Coverage: Enhances warmth and layering potential. - Refined Thermal Base Layer: Perfect for winter outings, travel, or cozy indoor moments. 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.