The flange system fits 1¾ inch stoma openings and emits an auditory signal when the pouch is securely closed. The 10-inch ConvaTecSur-Fit Natura pouch is easily changed without taking off the skin barrier. The two-sided, fabric-like comfort panel feels soft against the skin. This two-piece drainable pouch has an advanced air filter that allows gases to escape to prevent odors. The InvisiClose tail closure system drains fluids easily. The opaque ConvaTec Natura drainable pouch evenly distributes the contents throughout.