M-Brook, Color: Clear, Women's Size (US): 6 Heel measures approximately 5 inches" 5 Inch Clear Sandals Available In Clear By Ellie Shoes. The letter "M" in the sizing designates "Medium Width" Shipped via USPS Priority Mail (2-3 day) or USPS Express Mail (1-2 day with signature required). All International shipments sent USPS Express Mail when available.