The Ibex Women's Woolies 150 Bottoms do double duty as leggings, can dress up a tunic and are always ready for off-season skiing. (Glaciers, anyone?) A good Merino rib-knit layer is never put away for long. Wool's natural temperature- regulating and moisture-managing properties give you next-to-skin comfort year-round. 18.5 microns of natural performing fiber in a full-length bottom.