Under Armour ColdGear products don’t just make you warm, they keep you warm, with no extra weight or bulk. Under Armour ColdGear has a soft, thermo-conductive coating inside absorbs and retains your body heat. It’s better than most other brands because the infrared imaging detects & pinpoints heat loss in insulation systems.
Pictures is the Men’s UA ColdGear Evo Compression Mock & the Men’s UA ColdGear Evo Fitted Mock. I use the compression shirt for winter running, and Evo Fitted Mock for skiing.