Goat Hair- It Makes a Great All-Weather Tent

So, as I mentioned a couple of days ago, I've started reading Cradle to Cradle by William McDonough. In the introduction (I've gotten further than that), he writes that the Bedouin in Jordan used woven goat hair to make their tents. It's portable and easy to repair. It's renewable because goats always travel with the clans. When it rains, the fibers of the goat hair swell and keeps the water out. It seems so brilliant.