Indy's hat! It is as iconic a piece of silver screen costuming as their ever was. It's called a Fedora and it is a wide-brimmed felt hat that gained popularity in the early 1920's and remained a required accessory for most men well into the 1950's.
Nobody wears one better than Indiana Jones but don't let that stop you from getting one of your very own.
Here are a few classic shots so you can wear your Fedora just like Indy: