You use the built in pump to pressurise it and the black rubber thingees to seal around the plughole/toilet.
I bought one a while back but converted it into a rocket launcher
jennyjj01 wrote:"I'm not in the least bit worried because I'm prepared: Are you?"
"All Things Strive" Gd Tak 'GarLondonpreppy wrote: At its core all prepping is, is making sure you're not down to your last sheet of loo roll when you really need a poo.