The men's Polarmax Active Stretch Base Layer Crewneck is a midweight baselayer top for staying comfortable on cold ski days. Wear it under outer layers while carving down the mountain or riding the lift. Four-way stretch supports unrestricted movement, while the breathable polyester-spandex blend offers flexible comfort. Acclimate Dry technology helps regulate temperature and moisture, and activated carbon technology supports odor control and moisture absorption. Bio Silver treatment helps reduce odor-causing bacteria.