The SUR-FIT Natura®Two-Piece Ostomy System is ConvaTec’s most extensive two-piece product line. The SUR-FIT Natura® Flange System signals a secure, accurate closure with a series of audible “clicks”. A simple snap-off, snap on design allows users to change the pouch quickly to match activities without removing the skin barrier from the skin. The High Output pouches come with a removable filter that reduces pouch ballooning and neutralizes odor, an anti-reflux valve that decreases liquid output backflow, and an outlet with spout and cap that quickly and easily drains high liquid output.