I heard of it somewhere, perhaps in a historical book at some point, but I'm not sure. Is there such a thing?
At least around here some people use cloth diapers for their children (saves hundreds of pounds, just for a starter)
We used cloth nappies for our daughter - bought a load second hand for £20 - brilliant things (didn't use wool, though... couldn't cope with the miasma of sheep )
If you full wool, that is thickened and stabilised by felting it a bit, and then oil it, it's pretty blooming weather proof
I often spritz a fleece with baby oil in water to help it handle well when I'm spinning it, specially if its been washed- I prefer to spin from a raw fleece though as the natural oils etc ( ) seem to help it both during the spin, knit and eventual wear processes The important thing with ganseys etc is that the wool is spun along the fibre (a worsted spin) rather than across it (woolen spin) as the woolen traps in air where the rain runs off worsted and the fibres sit closely together so is more windproof.... mmmm I believe, always happy to stand corrected