Swim Diapers

All any swim diaper does, whether cloth or disposable, is prevent poop from floating around the pool.  There is no way to prevent pee from escaping into the pool, so no swim diaper is absorbent, nor would you want it to be (it would weigh the baby down.)  Swim diapers should fit snugly and should be worn with nothing underneath.  (Put a regular diaper on the baby on the way to the pool and change into the swim diaper once at the pool and ready to go in the water.)