This is the perfect midlayer for everything you do outside. Light, soft, stretchy, super-warm—you can wear it by itself when it's cool, or under a jacket in the dead of winter.
UA Base 2.0 is built for cold weather and high activity levels. It uses a unique pattern that's designed to trap heat without adding bulk. Think long underwear, revamped for today's top athletes.
Cut from the same fabric as the Jetstream Jacket, the Jetstream WINDSTOPPER® Beanie is ideal for charging up steep faces in bitter cold or sitting motionless on a windy ridge.
Designed with versatility, function, and value in mind, Fieldsheer's Proton women's Heated Baselayer Shirt delivers uncompromising performance combined with our Mobile Warming Technology.
Armour Fleece® is light, incredibly warm, and has just the right amount of stretch. UA Storm is water-repellent and nearly weightless. Together, you never need to train indoors again.