Designed with a fresh fiber shape and constructed with 100% merino wool, The North Face Wool Baselayer Tight Pants blend function, comfort and durability. Considering your base layer is your first line of defense against the cold, it's best to start with something comfortable and controlled. Merino wool wards away the cold while also breathing and keeping you dry and temperate. The North Face Wool Baselayer Tight Pants ensure a good day on the mountain from the get go.