From the pattern:

• Fibre: Blue Faced Leicester
  • Spin: 2 ply, WPI 13
  • Weight: approximately 22 grams / 0.8 oz
  • Yardage: 60 meters/ 65 yards.
  • Needles: DPN size 3 mm, I used 2.5 mm but I knit loose.
  • Gauge: 23 stitches to 10 cm/4 inches