DAYTONA F WIDTH YOUTH SIZES - average to wider fit Full leather Clarks lace up school shoe. Unisex. Clarks best selling school shoe. Available in half sizes and different width fittings (Widths D, E, F & G available). Fits to size. Please note the Youth sizes are from a 12 to a 3.5 IN UK SIZING. If you need Senior sizes see Clarks Daytona Senior.