These are quite possibly the most comfortable slippers you will ever own! Not to mention they're completely adorable and washable! Run true to size. In-between sizes, size up! Sizing: Small: 5/6, Medium: 7/8, Large: 9/10, XL: 11/12 Soft soles with grippers on the bottom Care Instructions: Machine wash cold. Tumble dry low heat. Use no bleach. Turn inside out when washing to protect outside fabric.