*CAPSTO FIT HEAD CIRCUMFERENCE CM INCHES FITTED SIZE UK ONE SIZE 54-60 211⁄8 –231⁄2 65⁄8 –73⁄8 size caps are adjustable and have been designed to fit head circumference ofbetween 22.5 inches (56cm) and 23 inches (59cm). *Thesecharts are for reference only. Fit may vary depending on the construction andmaterials