Finn's Hat

Finn's hat (otherwise referred to as Finn's awesome hat) is a piece of headgear that Finn wears throughout the Adventure Time series. It has come to be his trademark of sorts, as it is arguably his most distinct attribute. The hat is white and covers his entire head except for his face, and also has little bumps on the top at both sides that resemble bear ears. In the Animated Short, the hole for his face was a semi circle, and in the series it is an oval. Finn wears his hat almost constantly, and has even been shown to wear it to bed. When he removed the hat in "To Cut A Woman's Hair," Jake seemed surprised at his hair, so it's likely that he rarely removes the hat not even to cut his hair, and if he does, it is in seclusion. Finn has removed his hat, so far, in eight episodes: "To Cut A Woman's Hair," "Heat Signature", "Mortal Folly," "Apple Thief," "Beautopia," "No One Can Hear You," "Another Way", "Beyond this Earthy Realm", "Gotcha!" and "You Made Me". It was revealed in "Memories of Boom Boom Mountain" that Finn has had his awesome hat ever since he was an infant. Pen Ward has stated that Finn got his hat as a baby when he skinned a bear out in the woods.undefinedFinn appears to be quite defensive when it comes to his hat, for when the Ice King states that Finn's hat is stupid in the "Animated Short," Finn retorted by kicking Ice King in the face and yelling, "My hat is awesome!" It is presumably unique. Fionna's bunny-ear hat that she wears in the episode Fionna and Cate resembles Finn's hat in a different look.

Real Life Finn Hat
The Frederator Blog revealed that Cartoon Network's Creative Services division distributed a number of Finn hats to promote the show. The only stores known to carry the hats are Hot Topic, FYE, Newbury Comics, and Spencer's, but other hats might be given away in future contests. The blog also has photos of the show's crew and numerous fans wearing their very own hats. At Comic-Con numerous hats were distributed at the Adventure Time panel.