Closed-End Pouch, 12", 2-Sided Comfort Panel, Tail Closure, Filter, Tan, 1 1/2" Flange, 10/bx (416415)Pouches are compatible with SUR FIT Natura Two Piece Ostomy System which is ConvaTecs most extensive two piece product line. The SUR FIT Natura and 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.