Absolutely incredible and indispensable thing! Does not come out unless deflated. Does not leak. Made out of silicon. Only two problems have been encountered so far:

• Two inflating bulbs sometimes come out of the tubes, thus deflating the baloons. Nasty and frustrating thing, especially when you are bound and can not inflate it straight away.
• It is almost impossible to remove water from inside the balloons if it accidentally gets inside .

HIGHLY recommended! You can buy Double Balloon Enema Nozzle here.

Also see various Double Balloon Enema Nozzles on eBay.