I usually use cotton, but last quilt tried 80/20 and really like it. Would also like to try Hobbs washable wool. Saw some at a quilt shop during a shop hop and it felt so nice...and DH keeps saying he likes "poofy" quilts. I can't get him to understand that what he is referring to are "comforters"! Gotta love him anyhow...he is my enabler ;-)