Daytona Black Senior D Clarks School Shoes. This best selling school shoe features a shaped removable insole and cushioning around the heel collar for comfortable and supportive all-day wear. With the insole removed, this shoe is ideal for use with orthotics. Made from a leather upper and lining and available in a range of sizes, including different widths, this unisex shoe is a premium quality school shoe perfect for all kinds of feet. This version of Daytona is a D fitting for narrow feet. Widths come in: C - Extra Narrow D - Narrow Fit E - Standard Fit F - Wide Fit G - Extra Wide Fit