I have 2 new guys on my Masters Water Polo team that are well endowed. However they wear 2 speedos (one on top the other) during practice. It completely kills the bulge. Sad, if you ask me.
So I ended up asking one of them as to why they wear two speedos. The answer was twofold. One is that since it's a contact sport, if a player pulls on the fabric, it's hard for them to grab on. Second, he claimed that the outer speedo helps protect the inner speedo from breaking down too fast due to chlorine degradation. He says it has to do with the flow of chlorine on the outer speedo that will break it down faster over the inner speedo.
Learn something new everyday