The 70% cotton / 30% polyester Captain America Hero Postcard 9Fifty Snapback Cap was created by super quality hat maker New Era and pays homage to Marvel's First Avenger, Captain America! Captain America was a scrawny man circa World War II, but a little bit of super solider serum and some Vita Rays and BAM! He's about to tackle the White House! No, seriously. There really is no upper end limit to that stuff...look at the Captain America Hero Postcard 9Fifty Snapback Cap! He's got at least a good 100 feet on the White House. Maybe at that point his classic shield will be replaced by one of those alien ships from the movie 'Independence Day'! That Captain America sequel is making more and more sense now that I think about it. Either way, the Captain America Hero Postcard 9Fifty Snapback Cap has a snap closure for adjustments and even a felt Captain America shield on the lower left of the image!