This knitted sock pattern is by Adriafil for Calzasock Yarn. It is sized for UK shoe sizes 3, 5, 7, 9 and 10. It also has foot and leg length guides.
You will need 4 x 2.5mm double pointed needles, 1 x 3mm needle and 3 x 50g balls of Adriafil Calzasocks Yarn or 4ply equivalent, and some 15 - 20mm elastic.
Tension is 30 stitches and 42 rounds equals 10cm square in stocking stitch on 2.5mm needles