Hollister 18904 New Image Two-Piece Urostomy Pouch - Box of 10Description Reference Number: 18904 Box of 10 Pouches 2 3 4 Inch Stoma Drainable Features 1 Sided Comfort Panel New multi chamber design results in a more balanced collection of urine, and a lower pouch profile Improved flow control valve increases comfort against the body, so patients can do more, with less worry Security and confidence assured with internal non reflux valves and a drain valve that allows regulation of flow rate