They don't seem to exist and I haven't even thought about potty training yet. Do I just risk it or buy diposables. My son squeezes into his 12-18 one so I could just buy a 18-24 month one and hope it fits. The over 2 ones just have one of those mesh things.
He has never pooed in the pool but has once in the bath and today in his paddling pool when he was au natural.