From Knitty.com pattern page:

Yarn requirements: 2(2, 2, 2, 2, 3, 3)

FINISHED MEASUREMENTS:
Chest: 32.25(36.75, 41.5, 43.75, 48.25, 52.75, 57.5) inches;
Length: 19.5(20.25, 21.25, 22, 22.75, 23.25, 24) inches

You will also need a yarn needle and 2 stitch markers.