I recently bought my son a small 3ft pool. He is 4 years old and he loves his pool. I bought games and activities to play in the pool and help him learn how to swim. He is loving his new pool!!!
I buy an inflatable pool every year. My 4 & 2 yr old can go in there when it's too sunny, I keep it under the awning...so I don't have to worry about sunburns. Plus, I don't have to take the baby gate off from around the big pool...or have to go in!