Also used the huggies swimming nappies - they don't swell up in the water, but I don't know about them containing the wee ?? Have never had a child do a poo in one though. I have heard people rinse these out and use them again.
yep they dont stop wee going in the pool, alot of people think they do!

I haven't actually tried any swim nappies yet, but the ones that i think look good are on a site called 'darlings down under' - 'swim about nappy'.hth's.