A staff favorite...use them any way you like. Warm Polaretc Powerstretch is stretchy, wind resistant and comfortable
Made in USA by Ragged Mountain Equipment
Product Description
We use these as 'expedition weight' thermal underwear right next to the skin, while other folks wear them as their outer layer for running, cycling, x/c skiing or any other aerobic workout. Whichever way, we're sure you'll be satisfied that they sure are warm.