Finding plastic pants that suit you perfectly is not easy.
Over the years I've tried lot of types from many different manufactures.
There are so many different types, made from all different grades of plastic, some noisy, some quiet some thick, some thin, some pull on, some popper, some are well designed and work well, some are very badly made and won't last.
Basically you have to work youre way through what's out there till you find a pair that suit you and fit over youre prefered diaper.
Sometimes you need a few different types and sizes, because what fits over a large cloth night diaper is really not suitable over what you wear during the daytime.
The most important thing I find with plastic pants is to remmember they don't add anything to the absorbancy of a diaper.
They will catch the odd bit of stray liquid that escapes from a disposable, but once it has got out the diaper it will just wander round in th pants till it finds a chance to escape, usually out past the leg elastic.
With Cloth diapers if you wet a large amout at a time they will contain it long enough for the cloth to absorb the stray liquid, right up till the cloth is soaked then it will simply puddle at the lowest point in the pants till it finds an escape route.
Either out the leg holes or over the waistband.