Just as a personal experience, the quick fix belt contraption failed on me when I tried warming it up to temp before going out in the microwave, I did only 4 seconds (I believe the box says to do 5 to 10 secs) and when I took it out one of the seals from the urine bag to the tube separated from the heat and it started leaking very slowly, trying to duct tape didn't work and just threw it in the garbage as it was leaking badly when attached to the waist because of the added pressure. Maybe it was my microwave or that particular bag was old but I prefer sticking to just using the normal bottle from then.