For Flurry Heart, wearing a swim diaper helps prevent a mess in the pool if she's not potty-trained, and keeps her flank from getting sunburned without sunscreen.
For Pound Cake, swimming in the nude helps avoid rashes and chafing. Plus his mother doesn't have to waste money on swim diapers, but she does have to buy extra sunscreen.
Although, Flurry's logic has a flaw: at least her current diaper shows her flanks are exposed, so she's actually got less protection, but she's right otherwise. If the diaper is uncomfortable I'd understand, but if you can talk (the same language as the grown ups), just say it's uncomfortable.
Also, a diaper enables to avoid careful showering before going into a pool before an accident.
Although, Flurry's logic has a flaw: at least her current diaper shows her flanks are exposed, so sh
