The SUR-FIT Natura® ostomy system is a comprehensive product line with Convatec?s 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 while protecting against irritating output.