specifically, here are detailed measurements made with a clothier's measuring tape:
circumference of the inside of cap at brim: 23 inches
length: 13 inches
width 8 inches
height/depth of inside 5 inches
era: 1930s to 1950's
materials: not specified
color: light brown
inside liner is a soft and silky smooth (probably) polyester.
This is a true vintage item. yes, you can get a cheapo modern day fedora at any store, but this one is for the person who wants to wear real vintage and know that the hat will last for years.