smartwool smartloft 60 skirt - women's black small smartwool pull on smartwool's women's smartloft 60 skirt as an extra layer during a cold-weather run or to clean up for that after-ski beverage. filled with smartwool's lightest-weight, 50% recycled wool insulation, this skirt is great over smartwool base layers. the sides and waistband are made with a stretchy knit fabric to help keep it from restricting movement, so you can stretch, climb, and run whenever you need to.