The Acorn Womens Acorn Moc Slippers features richly textured uppers with soft microfleece linings that wick away moisture. A lofty Acorn memory foam midsole is placed over a comfort cushion layer of featherweight EVA that guarantees total comfort and therapy for your feet. An enhanced raised heal adds stability and support. Also features a weatherproof TPR outsole with a skid-resistant tread for sure footing. Womens Sizing Guide: Small = 5 to 6 Medium = 6.5 to 7.5 Large = 8 to 9 Extra Large = 9.5 to 10.5 XX Large= 11-12 Choice of colors. Fleece exterior. Moisture-wick fleece lining. Memory foam midsole. Sizes range from 5 to 11-12. Suede leather sidewall.