Reddit reviews Dappi Waterproof 100% Nylon Diaper Pants, White, Medium (2 Count)

We've been doing swim classes at our YMCA since just shy of my daughter's 4 month birthday.

The purpose of swim diapers is to protect the pool from poop, not pee. They are not waterproof.

First, check with the pool - every place has different rules. At my YMCA, they only require a swim diaper. However, a friend told me her swim location (not a YMCA, if it matters) requires a swim diaper and a waterproof cover like this. My mom said when I was a baby, the YMCA we went to required double-diapering.

So, call the swim place you're looking at and ask them what you should buy.

I personally am a fan of iPlay Reusable Swim Diapers. They do run small, so I'd recommend getting a size or two bigger than they say. (For instance, when my daughter was 4 months old, we put her in a medium even though their size chart said she'd fit in a small.) I also bought the waterproof covers I linked to above, just in case she pees in the swim diaper while we're in the car (so she won't pee in the car seat!). We take them off before we go in the pool, though.

And, no, we've never had an issue with poop in the pool. :)

I put plastic pants over the whole diaper cover at night. It prevents leaking. You need to get it big enough to cover the whole outside of the diaper.

Dappi Waterproof 100% Nylon Diaper Pants, 2 Pack, White, Medium https://www.amazon.com/dp/B0035JL912/ref=cm_sw_r_cp_api_j8NRBb2WXJY4P

I think the distinction is they want a waterproof layer over the swim diaper, because swim diapers are just glorified poop catchers and don't absorb pee (since then they'd absorb pool water too). So, something like this rather than just a reusable swim diaper.

These are what we got and they go over the underwear:
https://www.amazon.com/dp/B0035JL912?ref=ppx_pop_mob_ap_share

Yes. We had to. Daycare wouldn’t let us go commando and I knew he would keep pooping in his pull up if we switched him.

Edit: we did 6 days at home before he went back to daycare just to clarify.

If you're not afraid of a little laundry you can buy some cloth diaper trainers. And seeing as you are about to do potty training, you will probably be doing tons more laundry anyway.

When my son went through potty training, but wasn't night-time trained yet, we did underwear covered by a water-proof cover in the day. No pants. The cover catches most of the pee, but it isn't comfortable, and it isn't dry the way a diaper is. So this helped him "learn" the sensation of needing to pee. Because he was very aware of it as soon as it happened.

At night time, we used cloth diaper trainers, (we called them "night time underwear") - this was to keep up the illusion of wearing underwear (because he was "too big for diapers now") - but it gave the same basic protection. we used these coolababy ones although there are other options now that weren't around before such as these from Sunbaby.

There are also fully waterproof trainers for daytime use (not much absorption) such as these from Alva.

Anyway - I'm not sure how much it helps - but if she really wants to wear underwear, this may be a solution.