Fashionmore Women's Glazed Leather Slingback Heels Upper:Glazed leather Lining:pu leather Manmade quality rubber sole Heel measures approximately 3.9'' Adjustable slingback strap with buckle closure EU 35=US 4.5, EU 36=US 5.5, EU 37=US 6.5, EU 38=US 7.5, EU 39=US 8.5, EU 40=US 9, EU 41=US 10, EU 42=US 10.5, EU 43=US 11