Patons brand "classic wool", some are produced in Canada and some in Turkey.
It feels like cotton. The yarn is medium weight so it's easy to knit or crochet. The best value I have found so far. Priced at $6.99 at Joann's, 5.99 at Michaels. The good thing is, it's often on sale for $3.99 (per ball of 100g) at Michaels.
If you work in the education field, you can apply for a "teacher's card" for 15% off (cannot be combined with any coupon, but work for sale items).