The softest 100% cotton flannel bedding, specially woven to prevent pilling and excessive shrinkage, is made without chemical bleaches, dyes, or finishes. The Purists Flannel collection by SDH is offered in sheets, cases, shams, and duvet covers. Duvet covers have a button closure. Top sheets are hemmed on four sides with mitered corners and a generous turn back. Fitted sheets have elastic all around. Pillow cases have a button closure. Shams are flanged with a back envelope button closure.