Can't attest to how well it holds baby's #2 but I'm glad we didn't have to deal with it because the bottom snap of the diaper stopped working after the first wear.
Also, during the swim, I noticed something yellow on the outside of the diaper and immediately thought she had gone #2 but it was just the diaper! Still have no idea what caused the discoloration. We were in a normal, clean, and private swimming pool. And it was definitely not due to pee since the discoloration only happened on the outside of the diaper near edges.