I have a few pairs of RTW summer canvas trousers made from pure hemp in cream and taupe that I bought on a whim some time ago. I had always associated hemp with old rope, lumpy and scratchy homespun textiles, and hippies, but I cannot exaggerate how happy I am with this material. It is around 15 oz in a canvas weave but breathes very well, and can be comfortably worn in the high 30's in very high humidity. It holds a crease well but doesn't wrinkle like linen does and looks great at the end of the day. Like linen, it is easy to wash, becomes softer with wear and is extremely durable.
Romanian friends tell me that farmers in their home country still wear pants made of this material. I have been able to find sources online of Chinese hemp, but most of the European-produced hemp is in the 8-12 oz range. Does anybody know of a source for European-made hemp, (canvas weave or basket weave), in the 15 oz plus range that is soft enough to use for garments?