Materials: 2 ounces of 4ply knitting yarn. Crochet hook size I or size to give correct gauge.
Gauge: 4sc= 1 inch, 3 rows = 1 inch.
Sizes: Directions are universal for all sizes. Cup Size A(B-C-D)
Note: Tube can actually be made in almost any yarn, with any hook, depending on the weight of the tube desired.