I got this nappy for my daughter's baby swimming class and it's been great. It looks smart is good at keeping everything inside!
Tight fit around waistband and legs but somehow that is still combined with being easy to put on and take off. Looking at the fit I can believe that there would be no leakage but I didn't fancy cleaning it out so have to confess to a disposable swim nappy as well.
This particular brand of nappy was a requirement for my son to be able to participate in his swimming class, so bought out of necessity rather than choice. However, they really are effective and very easy to use and I recommend them to all my friends. Have been using a disposable nappy underneath but have now invested in the rest of the system (nappy wrap and disposable liners). Will let you know how I get on!