HEATTECH Cotton T-Shirt | Extra Warm

Stay warm and comfortable in cold weather with our Men’s ’HEATTECH' Extra Warm Cotton Crew Neck T-Shirt, UNIQLO's elevated thermal base layer designed for superior insulation and softness. Featuring advanced ’HEATTECH' Extra Warm technology, this long-sleeve tee generates and retains heat from body moisture, delivering twice the warmth of standard ’HEATTECH' . The cotton-blend fabric offers a soft feel while maintaining heat-retaining performance. The classic crew neckline makes it ideal for layering under sweaters, jackets, or wearing solo. Whether you're commuting, traveling, or enjoying outdoor activities, this thermal T-shirt provides warmth and everyday comfort.- ’HEATTECH' Extra Warm Technology: Delivers enhanced thermal insulation by converting body moisture into heat.- Cotton-Blend Fabric: Combines smooth softness with heat-retaining performance.- Heat-Retaining Stretch Material: Offers a snug, flexible fit that moves with your body.- Moisture-Wicking Properties: Keeps you dry and fresh throughout the day.- Classic Crew Neck Design: Versatile styling for layering or standalone wear.- Long Sleeves for Full Coverage: Ideal for cold-weather layering.- Enhanced Thermal Base Layer: Perfect for winter sports, travel, or daily wear in colder climates.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.