You've got two things going on here: a grid structure to trap warmth & exclusive ColdGear Infrared technology to hold onto it. That means one thing: the best warmth for a baselayer this light.
Features:
- Dual-layer, textured-grid fabric traps heat for unrivaled warmth with very little weight
- ColdGear Infrared technology uses a soft, thermo-conductive inner coating to absorb & retain your own body heat
- Moisture Transport System wicks sweat away from the body, Anti-Odor technology prevents the growth of odor causing microbes
- Compression: Ultra-tight, second skin fit
- 5.0 oz. 100% Polyester