So far I am very happy, they have, however, can not test the water. Our little one is very petite and weighs a little over 10 kg, the armbands keep super and he has to be happy. The material is quite normal for water wings, I can not "chemical" odor notice (unfortunately, because I like that whenever it smells so chemically * laugh at plastic * why just getting all think it was something bad or be less healthy than chemical what made due to the material just does not smell: D). Let's see how they then make the water ;-)