My daughter loves them. They fit relatively well. She swam in it and ran/walked in it. They stay about as you would expect a 4 year old to stay. We've had them get off in a big pool several times, but they've come back quite easily. My biggest complaint is that the insoles start to deteriorate pretty quickly. The last time she wore them, the insoles left floating particles in the pool. I'm sure the filter will remove them, but fewer floating bits in the pool are better. I probably won't buy a second pair if she outgrows these.
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