Natura® Flexible Durahesive® Skin Barrier, 4" x 4" (10cm x 10cm) White, Cut-to-Fit Stoma Opening 1/2" - 3/4" (13mm - 19mm), Flange 1-1/4" (32mm) - Box of 10Natura Two Piece Products The Natura Two Piece Ostomy System is ConvaTec's most extensive two piece product line. The 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 or pouch style quickly to match activities without removing the skin barrier from the skin. When it comes to Natura ostomy products, we recommend you take a look at the innovative