The only reason it has 4 instead of 5 is that all the lettering came off in the first wash. It's really irrelevant to actual use, but annoying. My son is 7 years old and only weighs about 50 pounds and 6-8 years old is great for growth. The material has a good weight/thickness and is well suited for his swimming lessons. He is enthusiastic about the bright green color.
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