Natura® Convex-It® Durahesive® Skin Barrier, 5″ X 5″ (12.5 CM X 12.5 CM) White, Pre-Cut Stoma Opening 2″ (50 MM), Flange 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 pre-cut opening. Box of 10.