Finished measurements: length (washed, not blocked) – 8.5 cm; weight of a sock – 4 g.
Yarn: 75% wool, 25% polyamide; 205 m/ 50 g.
Knitting needles: 5 DPNs – 2.5 mm (US 1.5).
Gauge (stockinette stitch – worked in the round, washed and NOT blocked): 6 cm = 22 sts, 6 cm = 27 r.
Further tools: tapestry needle, scissors, row counter and stitch markers (optional).
Requiered knowledge/skills: stretchy cast-on, k, p, k2tog, p2tog tbl.

Useful sources:
Mock boomerang heel:
EN: https://www.youtube.com/watch?v=C2OnY2a5ovY
RU: https://www.youtube.com/watch?v=wXkz7XNkq4k
DE: https://www.swrfernsehen.de/ard-buffet/kreativ/die-falsch...
Easy Elastic Cast-On: https://www.youtube.com/watch?v=E5JN1Qp9R1M
K2tog: https://youtu.be/Lx8BySRLlAE?si=Se5Pvw6AnhFeG5hz
P2tog tbl: https://www.youtube.com/watch?v=N9QrnI4kTEY

If you find any mistakes in the knitting pattern or have any suggestions regarding the instructions, please feel free to contact me.

Copyright notice. This knitting pattern was created for private use only: Please do not reproduce, share, trade or sell it or knit any items for sale.