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 actually adapts to what you're doing by dumping heat as you pick up speed.
Fitted: Next-to-skin without the squeeze.
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