Snoozies Womens Fleece Lined Footies (X-Large/ 11-12, Cupcakes) Non-skid sole Machine Wash & Dry Soft Sherpa fabric lining Womens sizing (approx. inside length): S (5/6) - 8.5"; M (7/8) - 9"; L (9/10) - 9.75", XL (11/12) - 10.25" S (5-6), M (7-8), L (9-10), XL (11-12)