Fuzzy sherpa fleece on the outside and lined with a silky soft faux fur with a durable rubber sole, just in case you need to run out for night check. Get a matching pair of LIMITED EDITION crew socks with each pair of these oh-so-comfy D&S Slippers. The slippers will stretch widthwise over time. If you like your slippers a little roomy at the heal, please size up! Slippers- Outside fabric: 95% poly, 5% spandex Inside fabric: 100% poly Sole fabric: TPR Socks- 80% cotton, 15% poly, and 5% spandex Wash Cold and Air Dry the Slippers