Compare HEATTECH Ultra Warm T-Shirt

- Specially knitted to trap air for a soft and warm feel. - 2.25 times* warmer than our regular 'HEATTECH'. *Based on CLO values, which measure clothing's thermal resistance. Comparison with standard 'HEATTECH'. - High-performance fabric with Heat Absorption, HEAT RETENTION, and moisture-wicking comfort features. - Ultra Stretch fabric. - Soft texture and excellent shape retention. - Brushed for warmth. - Body width and sleeve length designed to wear like a long-sleeved T-shirt or sweatshirt. - T-shirt style collar is easy to layer.