A plastic pouch intended to function as an extension to a urostomy or intestinal ostomy bag to increase the collection volume capacity of discharged excreta (urine or faeces) from a patient, typically during sleep. It is designed to connect to the urostomy/intestinal ostomy bag, not directly to the patient, and typically has a drainage tap to permit the emptying of urine/faeces; a non-wearable bag hanger/holder may be included with the device. This is a reusable device.