11 inch. Made of Nylon, Metal, Elastic Band. Here is an item that is sure to catch the eye while keeping the body beneath dry in the rain and cool in the sun! How about this umbrella hat? Leaves your hands free to clutch everything else you are trying to keep cool or dry, or to cheer on your favorite athlete or team! Plenty of room for your logo and message! Folds up compact so you can take it anywhere!