@toentje The valve is a simple device that plugs into the end of the Foley catheter. I have been using it 24/7 for about three years (changing every month). You can tuck it inside your underwear or, I suppose, use it with a stabilizing band like you would with a bag. It simply avoids a leg bag and night bag so you can wear shorts, etc. An alternative would be to use it during the day and keep the night bag to avoid getting up multiple times during the night. I usually get up about three times. The valves are available from Amazon, brand name ugo (cute huh?).