For this bag you will need Worsted Weight 100% Wool Yarn -- 330 yards of Color A and 440 yards of Color B.
Suggested needles are US 10.5, 24" or 29" Circular and (optional) a set of US 10.5 Double Point Needles.
You will also need Stitch Markers and a Tapestry Needle.
Felting supplies include a zipper-type mesh laundry bag, laundry soap, and a washing machine.