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 varnish them as you want. Sizes are based on real-sized examples of handmade knitted socks and are tailored to shoe sizes.