From Birkenstock, the Women's Tokio Professional Leather Super Grip Slingback Clogs feature: Natural leather upper Adjustable strap with metal pin buckle Suede footbed lining helps keep you comfortable Contoured cork-latex footbed creates custom support with wear Super Grip outsole comprised of two components: a nonslip, oil- and grease-resistant outsole made of rubber and a shock-absorbing midsole made of light, flexible EVA Flat heel Imported.