BTW I have the best success by far with Conveen Optima Condoms and I've tried a lot. Optima condoms are easier to put on with the little strap to help pull on and easier to put on or remove from the leg or night bag since the condom neck has ribs making them easier to pull on or off. Best design by far I think. Their leg and night bags also have tubing that is lighter and more flexible.
Using a skin barrier film (Spray or liquid on sponge, like Safe n Simple no sting, others also) helps keep the condom on if you are having issues and even wrapping tape around end of the condom with 3m flexible waterproof tape helps even more (Loosely).