These warm fleece lines leggings can be worn alone or under another pair of pants as an insulated thermal layer. They feature a finely ribbed waistband for comfort, soft fleece lining for warmth, and spandex for durability and stretch. 93% polyester, 7% spandex. Machine wash cold. Line dry. Size S/M fits 90-135 lbs, Size L/XL fits 135-185 lbs.