Knox Vagabond. This one should be labeled "paper hat weight"
Domingo, ponte el sombrero y vamos.
I have a number of lightweight hats... love 'em. The lightest is my Borsalino featherweight - with lining, a little over 2 ounces.
Time for a bump... it's summer!
This unlined Dobbs Cross Country Flanul felt gives the Borsalino Featherweight a run for the money in the lightness category... a tad under 2.5 ounces.
My lightest felts are my 1950s era Lee lightweight and my 1940s era Stetson Playboy.