The baselayer that solves the problem of either being too cold when you start working out or too hot as you get going. ColdGear® Reactor uses a unique structure to actually adapt to what you're doing so as you pick up speed, it dumps excess heat.
Compression: Ultra-tight, second-skin fit for a locked-in feel.
ColdGear® Reactor adapts to your activity level for the right breathability & warmth for what you're doing
Fabric has soft, brushed "nodes" next-to-skin for the right warmth that breathes as you move
4-way stretch construction moves better in every direction
Material wicks sweat & dries really fast
Anti-odor technology prevents the growth of odor-causing microbes