We are very much in the sea and swim in the pool and in two types of water are diving masks awesome for the kids. My children both have incredibly fast learned to swim because they could run around wildly always, without thinking of the water in the eyes. Especially in seawater incredibly helpful. The fact that the goggles protect the eyes of a child before the hydrogen chloride, was an important argument why I wanted a diving mask for the kids for me. The Aqua Sphere goggles (this model I bought for our 5-year old son who can swim for two years) have an incredibly high quality. The kids (even with 3 years) you can easily sit up and take down itself. They look good and can also wear long without being hurt them the glasses. I can only recommend every mom and dad every which INVESTMENT for Aqua Sphere eyewear. We have really used very much, in the sea and swimming pool, the children they have handled 80% alone. After a year, our glasses were interchangeable, but they were also used really strong. And since I like buying every year a new one if you are living so perfectly simplified.