I took my son who will be 4 next month to our local swimming pool located outside. He was always afraid of water but after weeks of going he was able to get in the kiddy pool. Then a couple more weeks he was running through the sprinklers. A couple weeks later he went down the kiddy pool slide and he went in the walk way (a ramp that goes into the water, getting just a little deeper each step and is only a little over 2 feet). Well today he let me hold him in the deeper end. 3ft 6 inches. He loved it. And he even jumped off the side of the pool into my arms! He was having such a great time laughing and jumping it was amazing. I love my little man.