It’s our smartest baselayer ever. No, really. The interior fabric is designed to keep in warmth, but then circulate it away from your skin, so you don't overheat. Now you can work out in any temperature the weather—or your body—throws at you.
Compression: Ultra-tight, second-skin fit for a locked-in feel.
ColdGear® Reactor is intelligent insulation that 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
Wide elastic waistband with back pocket that can store your phone
Mesh back panels deliver extra ventilation where you need it most
Reflective details deliver greater visibility on low-light runs