Uniqlo HEATTECH Ultra Warm T-Shirt Beige NWT XL

‘Ultra Warm’ is 2.25 times* warmer than our regular 'HEATTECH'. *Based on CLO values, which indicate the thermal insulation of clothing. Compared to standard 'HEATTECH.' High-density fabric on the inside, brushed for a fluffy feel. The ultimate thermal base layer, even in The most extreme cold. Simple crew neck with a T-shirt style collar. Moisture-wicking for stay-fresh comfort. Knitted fabric keeps its shape even after repeated washing. 41% Acrylic, 37% Polyester, 18% Rayon, 4% Spandex