No information on the yarn, other than the obvious: it’s got small slubs or bouclé loops or something to give it texture. It’s a fingering yarn and probably came in 1 oz. skeins. It requires 9 skeins for the 32” and 24” sweater and 10 for the 36” sweater. Yardage per oz. would probably have been in the neighborhood of 130-140 yards.