From online description: “Begin 1-1.5 sizes up from street shoe size. The E-Series slip-on is our most popular jazz shoe and needs no introduction. The neoprene arch hugs feet when pointing and flexing to avoid bunching. More features include moisture absorbent lining to keep dry and padded insole for extra support. Product Features” Begin 1-1.5 sizes up from street shoe size Soft durable leather for comfort Absorbent cotton lining to keep you dry EVA Rubber sole patch and non-slip heel counter Soft Achilles topline Upper - 100% genuine leather, Nylon, Spandex, Sole - EVA Machine Washable Imported