Prestige Yarns - Fiori Sock Blockers - 2 per packSock Blockers With these Fiori blockers, you can dry your socks after washing. Blocking your socks is entirely optional but it's good to it for two reasons: During the first wash fibers relax and the fabric becomes softer and even. Blocking also gives the knit it's form and opens up the stitch pattern so that it does not look like a wrinkly mess. Made from 4 mm plywood. Sanded front, back, and edges. Blockers are not varnished so you can paint or