The Sur-Fit Natura® Two-Piece Ostomy System signals a secure, accurate closure with a series of audible clicks. The simple snap-off/on design allows users to quickly change the pouch without removing the skin barrier. These High Output pouches come with a removable filter that reduces pouch ballooning and neutralizes odor. 14" transparent pouch for high output, with 1-sided comfort panel, anti-reflux valve, replaceable filter and outlet with spout & cap. 2-3/4" flange, 5/box.