Use these booties during dance classes and rehearsals to keep your feet warm. Ideal for dancers of all levels. Sizing: XS (US 13.5 - 1.5), S (US 4 - 6), M (US 6 - 8), L (US 8 - 10), XL (US 10 - 12). If wearing with pointe shoes, take the next size up from your normal shoe size.