My 4 year old wears this suit happily (mostly because it's pink, but also because in early summer she had sunburnt shoulders.)We've used it at outdoor pools and splash pads, and it seems to be wearing well. Best of all, no sunburnt backs and shoulders. We also use a lot less sunscreen, which is nice since there are so many controversial ingredients in most of them.
We used this suit in the pool and at the beach. It is great for SPF factor and quality of material. The colors are vibrant and construction of seams and zipper are durable. The sizing is a little big, but it will just fit for longer...
Great fit and quality. Would definately recommend it!