Premier One-Piece Urostomy Pouch Convex Flextend Barrier, Tape. This one-piece, urostomy pouching system with convexity has a tap at the bottom which allows it to be connected to a bedside collector with the use of the adapter provided. The Flextend barrier is an extended wear skin barrier that is durable and offers high resistance to erosion. Anti-reflux feature in pouch minimizes backflow of urine. Soft, beige ComfortWear pouch panels help provide comfort. Features: Tap has teardrop indicator, Flextend skin barrier, convex, Transparent and beige odour-barrier pouch film options, Cut-to-fit and pre-sized skin barriers, Tape border, Not made with natural rubber latex.