My Pool PalReusable Swim Diaper, White, 3T

I bought this for my 18 month old. She is large for her age in the 85-95 percentile at any given time so I decided to get her the 3T and it was a great fit, at 2+ years old it still fits her but is starting to get snug. I would suggest following the weight limits and not the size

I prefer this swim diaper over the snap kind we bought. They aren't very thick like another pair we have but they do a good job. They fit nicely over the throw away swim diaper. Order by weight and they should fit perfectly.

I ordered these for my two year old to wear under his swim suit. He is average size and they were too tight. However they make GREAT diaper covers for my 7 month old so I am happy with it (which shows how small they actually are).

My granddaughter uses these during swim lessons. They are soft and snug nicely around the legs. I recommend to all young children in the pool newly potty trained or not.

My son runs thin and small for his age. He is not even three and it is tight. Definitely won't work next year when he is actually three. It also does not work to keep pee in.

Bought two pair of 3T for my 2 - 1/2 yo son. They fit great. He is about 34 lbs.

This swim diaper has gotten a lot of use and has been perfect for my two and a half year old.

Someone else commented on how small these looked -but the sizing is correct, you have to consider there isn't a diaper underneath at all. We have not had any #2 accidents yet so the jury is out on that functionality yet.