Paradise Silk Silk Cashmere Ribbed Knit Women Thermal Pants Legging Made from 70% natural silk,15% cashmere and 15% nylon Natural silk blend fabric wicks moisture away from the body and keep sensitive skin protectet Thicker than common cotton bottom, warm in cold day(Extra thick,may not suitable to under a slim fit jeans) Ribbed Knit fabric looks smaller than plain knit fabric,more stetchy and better to keep warm Hand Wash preferred,Machine wash cold, gentle cycle, No Alkaline,No bleach, Dry flat