I tossed a soaked swimsuit in this after the pool and my bag stayed completely dry on the outside. The waterproof fabric feels just like the bibs we already have, so I trust it. The rainbow print is cute enough that I don't mind carrying it around.
The heat-sealed seams really do keep everything contained—I've had zero leaks even with a dripping wet cloth diaper in there. It's the same waterproof fabric as my kid's bibs, so I already trusted it before the first use.
Threw a soaked swimsuit in here after the pool and nothing leaked through my tote on the walk home. The heat-sealed seams really do hold up, and the rainbow print makes it easy to spot in a crowded bag.