Cymed MicroSkin - Large Adhesive Ostomy Barrier/Flange (Cut to Fit) is a cut-to-fit barrier for stomas up to 2 1/2". The unique MicroSkin Adhesive barrier is transparent, durable, and has a moisture-vapor permeable film that encourages the skin to breath. Plus, this skin barrier is waterproof. You can go in and out of the water worry free with Cymed ostomy supplies. There is no need to remove or change the Microskin after swimming, showering or hot tubbing. Instead, simply pat dry the wet area. Cymed is keeping pace with innovation with large size adhesive ostomy supplies.