Some of these links may be affiliate links and I may earn a small commission off of the sale of these products to help defray the costs of operating this site, but the price you are charged is not affected. You can see my full disclosure policy here. You generally want unmercerized cotton as the mercerization process makes less absorbent material. I stay away from polyester/acrylic yarns for knitting washcloths as I find that those materials are not absorbent and don’t hold their shape. Some brands to consider: Lion Brand 24/7 Cotton Spinrite Peaches & Cream Cotton Lily Sugar ‘n Cream Bernat Handicrafter Cotton