Women's Floppy Hat With Bow Wide Large Brim Beach Straw Sun Cap With Elastic Strap 100% Straw Hat is 18 inches in diameter with an elastic strap on the inside to keep it on your head Pretty bow tied on top and braiding along the edges make this hat special Straw material makes up the hat, with a solid pattern You cannot wash the hat, but it is for casual style and use Head circumference is 20 inches around