Natura® Convex Durahesive® Skin Barrier, White, Cut-To-Fit Stoma Opening 1/2″-7/8″ (13 MM-22 MM), Flange 1-3/4″ is an ostomy skin barrier designed to help create a secure seal and support confident wear with two-piece, convex barrier profile, durahesive wear formulation, and cut-to-fit opening. Box of 10.