Knit your own Concertina Lace Socks using these clearly-written instructions by knitwear designer Jackie E-S of HeartStrings FiberArts.

I designed this lace to give the illusion of dimensionality, rather like the bellows on a concertina. This small accordion-like instrument mesmerizes everyone with its happy music and wavelike rhythm as the bellows are pushed in and pulled out.

5 sizes for adult extra small through extra large. 225[275, 325, 375, 425] yards fingering weight yarn. 8 stitches/inch, size US 1 / 2.5 mm needles suggested. Shown in Nature's Palette 100% merino wool (50g/185 yard), 2 skeins color Medium Indigo. Charted and written instructions.