How does one clean both the hemp and canvas Tilley hats?
Tilley fabrics are boiled before manufacture, so they don't shrink. I just throw mine in the washer and set them out to dry. You can do the old sailor trick of grabbing the brim with both hands and stretching the (wet) hat out over your knee to widen the brim, but I've never needed to do that on a Tilley. They are stout hats.