This is the inflatable pool i think well go with this time. The boys are bigger and we'd like to enjoy it too. I've added it and some foam mats that you piece together to keep underneath. This will protect the pool and our bottoms from the concrete patio. We tend to leave it up for days at a time and the grass doesn't seem to respond well to that.
Intex Swim Center Family Inflatable Pool, 90" X 90" X 22", for Ages 6+ https://www.amazon.com/dp/B0044AD5EA/ref=cm_sw_r_awd_zBVrvb0J650E4
Amazon.com: Intex Swim Center Family Inflatable Pool, 90″ X 90″ X 22″, for Ages 6+: Toys & Games