2.25 times warmer than our regular HEATTECH. *Based on CLO values, which measure clothing's thermal resistance. Comparison with standard 'HEATTECH'.
HEATTECH CREW NECK LONG SLEEVE T-SHIRT (ULTRA WARM)
With Heat of Absorption, HEAT RETENTION, odor control, DRY technology, shape retention, and moisture-wicking comfort features. - Ultra Stretch
HEATTECH CREW NECK LONG SLEEVE T-SHIRT
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2.25 times warmer than our regular HEATTECH. *Based on CLO values, which measure clothing's thermal resistance. Comparison with standard 'HEATTECH'.
HEATTECH CREW NECK LONG SLEEVE T-SHIRT (ULTRA WARM)
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