Womens Colorblock Two Tone Ballerina Cozy Fleece Snoozies Made of Polyester with Skid Resistant Sole Colorblock Two Tone Ballerina Style with Soft Pom Pom Sherpa Fleece Lining Womens Sizes with Comfort Fit Bottom of Memory Foam in Heel and Ball US Size scale as follows: Small: 5/6, Medium: 7/8, Large: 9/10, Extra Large: 11/12 Machine Washable