Reusable swim diapers size 4t/5t

I have two pairs of reusable swim diapers made by green sprouts. My son never went number 2 in these. And we’re laundered regularly! They say they fit a 5t but I think they run small. However, I also had a chunky little one. I would say anywhere between a 3t-5t depending on your child. These were expensive like 25$ a piece plus shipping which is why I priced them at what I did.