Natura® Flexible Durahesive® Skin Barrier, 4″ X 4″ (10 CM X 10 CM) Tan, Cut-To-Fit Stoma Opening 1/2″-3/4″ (13 MM-19 is an ostomy skin barrier designed to help create a secure seal and support confident wear with two-piece, durahesive wear formulation, cut-to-fit opening, and beige/tan. Box of 10.