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. Natura + pouching system offers the latest technologies from ConvaTec. - The Sur-Fit Natura and Natura + Flange System signals a secure, accurate closure with a series of audible Inch clicks Inch. 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. A state-of-the art filter with anti-clogging film layer -Soft and quiet materials -The security of the InvisiClose tail closure with Lock-it Pocket. ConvaTec's latest pouches combined with SUR-FIT Natura advanced skin barrier adhesives offer you the security, comfort , and discretion you deserve.