In terms of shape, this is a porkpie. The hat shape, which takes its name from a British pasty dish, became popular in the 1920s, has since enjoyed success in both artistic and subcultural settings, and has long been a wardrobe classic for men. Diefenthal makes it from woven paper straw: the material, made from cellulose, is light, airy thanks to the open weave and yet provides pleasant shade.Diefenthal. Hang On to This Hat! Pia Diefenthal, a hatter in the fourth generation, combines her expertise and passion with the long-standing family tradition. The result is well-thought-out hats and caps, including headwear classics – some of them made from surprising materials. Eventually, Diefenthal finds inspiration in the metropolises of the world.General product information Men paper hat, Natural | Manufactum