Women"s sizes: X-Small = size 2, 24-25" waist, 35-36" hip. Small = size 4-6, 26-27" waist 37-38" hip. Medium = size 8-10, 28-30" waist 39-40" hip. Large = size 12-14, 31-32" waist 41-42" hip. X-Large = size 16, 33-34" waist 43-44" hip. * 100% merino wool rib and jersey knit, UPF 35. Machine wash cold, tumble dry low. * Comfortable next to the skin, and offering the world"s most efficient moisture-management system. Seam construction throughout legs for better fit and a performance look. Perfect for high aerobic activities in colder weather.