I'm knitting these socks as faithfully as possible to the design of Rokugo Inotani. The entire sock is knitted with three strands of fingering weight wool yarn (100% wool) held together. For the toes, I've added extra-fine angora yarn, holding four strands together. For the heels, I've added one strand of fingering weight yarn, holding four strands together, to make them durable and cushioned. The colors in images ④, ⑥, and ⑦ are the closest to the actual sock color. I've knitted these carefully with good quality yarn, but this is a hobby project. I've decreased and increased stitches at the ankle to make the sock fit snugly. This is a hobby project, and it is not perfect. I hope those who understand this will consider purchasing them.