Made with a special two-layer soft jersey knit, Polarmax's Double Layer long underwear is sure to keep you warm when you need it most. The unique double layer construction traps warm air between the two layers for excellent thermal retention. These women's thermal long johns are knit with special Acclimate Dry hydrophobic yarns to provide additional moisture management to wick away moisture, keeping you dry. These midweight base layer pants are a tried-and-true favorite choice for comfort while protecting against the cold.