We understand the hesitation on skipping these products for the newly potty trained- especially when heading off to a public pool. The answer to this question is no- they don’t need to wear them after being potty trained, but you are going to need to keep a eye on them for the first few tries. Your small human is new to the planet, and may not know all of the customary ins and outs of pool behavior. It may happen they they let one slip by while in a public pool. Be sure to tell them that it isn’t ok, and continue to keep an eye on them. The general rule of thumb here is that if it becomes habitual, you may have to take a few steps back in their training when it comes to public pools.