ColdGear® Reactor is our greatest innovation for true cold weather performance. Why? Because it actually adapts to what you're doing, so as you start to heat up, it cools off. You stay the right temperature, from your first stride to the finish line.
ColdGear® Reactor intelligent insulation adapts to your activity level for the right breathability & warmth for whatever you're doing
Soft Reactor lining for breathable, next-to-skin warmth that adapts to any activity for non-stop comfort & total versatility
Wind-resistant woven side panels with 3G insulation for extra warmth
Material wicks sweat & dries really fast
Anti-odor technology prevents the growth of odor-causing microbes
Reflective front logo & rear details for increased safety & visibility during low-light runs