Roisin’s Slipper-Socks for Finella by Leslee-Langlands | Jun 24, 2012 | knitting, photos, Roisin, Slippers, Socks Finella is Roisin’s grand-daughter, in Australia, and of course it is winter there so these slipper-socks will be off to Oz on Monday. And yes! They did felt, even though the wool content was only 34%. Just proves there’s no harm in trying things.