ConvaTec SUR-FIT® Natura® Two-Piece Stomahesive® Pre-Cut Skin Barrier with Flexible Tape Collar 5" x 5" Size Square Shape, 2-1/4" Flange, 1-1/2" Stoma Opening, Latex-FreeThe SUR-FIT® Natura® Ostomy System is a comprehensive product line with our latest skin barrier technologies. The plastic coupling ring allows the pouch and skin barrier to snap together for audible security. Stomahesive® skin barriers are ideal for people whose stoma output is semi-formed to formed. This reliable skin barrier provides a unique formula that enables the skin barrier to adhere to both dry and moist skin. It is gentle on skin yet holds firmly.Enables the skin barrier to adhere to both dry and moist skin.Gentle on skin yet holds firmly.