Compare HEATTECH ULTRA WARM CREW NECK T-SHIRT

- ‘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.- Simple crew neck with a T-shirt style collar. - Moisture-wicking for stay-fresh comfort. - Knitted fabric keeps its shape even after repeated washing.