I had quite a grand moment cutting a big piece of peat felt I've had for over a decade. The Finnish company that made it, Kultaturve, is sadly no more. They developed a way to use the rotted fibres of the cotton grass (Eriophorum vaginatum) that grows on top of the sphagnum moss. After nearly a thousand years buried under the earth, in the peaty bog, the plant becomes a fibre with exceptional properties for textiles and clothing. It is warmer than wool, exceptionally light, breathable and antistatic.
Mind you my felt is so thick that lightweight is not one of it's attributes. Or perhaps the sheep's wool blend makes it heavy.
PSst! Now you can view the outfit here.