From knitrowan.com website:
These comfortable socks are knitted in Hemp Tweed, a blend of 75% wool and 25% hemp. Designed by Martin Storey the socks feature a unique crossed stitch pattern and stretchy rib cuffs.

You will need either sizes US 6 and 7 double-pointed needles or circular needles in the same sizes at least 80 cm (16”) long.

Yarn used:
Rowan Hemp Tweed
Color 135 Pine - 3(4,4) balls