a cotton imitation of flannel.
A fabric type that is generally 100% cotton, although do watch out when buying as some times it is a cotton/polyester mix which is not as absorbent. Flannel/flannelette is commonly used as it not bulky, and gets more absorbent with washing.
A medium-weight, plain weave fabric with a soft hand, usually made from cotton. The fabric is usually brushed only on one side, and is lighter weight than flannel. End-uses include shirts and pajamas.