This is a denim hat from the US military, circa the 1930s. I purchased it about 15 years ago from a reputable vintage clothing store in Hiroshima. It's a vintage item, so there's some soiling and damage, but it's still perfectly usable. The color is closest to the actual item in the first photo. It has an amazing atmosphere and looks really cool. Head circumference: Approximately 56cm Vintage, vintage, M-37, army