Helly hansen womens hh warm pants combining the unique lifa stay dry technology next to skin to keep you dry with a premium merino wool exterior with superior insulating and wicking properties featureshhwarm215gmflatlock stitchingallergy neutralnon itchpure merino woollifastay dry technologytechnologieslifawarm this base layer features two different components the inner lifa fibres ensure you stay dry while the outer soft merino wool adds warmth and comfort the lifa fabric used