Under the Pouch: The skin barrier arcs can be placed directly on the irritated skin around the stoma to create a smooth platform to adhere the pouch or wafer. The arcs protect the skin from trauma caused by repetitive removal of tapes and adhesives. Over the Pouch: The skin barrier arcs can be placed around the wafer to secure the edges from lifting up, creasing or loosening. Use 1-3 arcs around the edges. Skin barrier arcs provide an excellent alternative to waterproof tapes and give you a waterproof seal around the wafer when bathing, showering or swimming. 2" wide - 30 per tray.