<p>Thermoregulating underscrub uses NASA-developed Outlast® yarns to keep you cool when you're running around and warm in chilly environments. Equipped with exceptional stretch and recovery.</p> <ul> <li>Slim fit</li> <li>Crew neck</li> <li>Raglan sleeves</li> <li>Minimal seams for chafe reduction</li> <li>Pique knit for increased moisture control at center back, arms and sides</li> </ul>