My 2 1/2 year old just went on it two weeks ago. He's just barely over 38" so they gave him a wristband and stamped Kali over it. He had to sit in the seat that had the bar in front of it. DH sat next to him and my older 3 boys all crowded together. I sat across from them and stayed dry, LOL. The first time the water came over the top of him from the back, he was shocked but he laughed and enjoyed it. He normally enjoys the pool and the tub, but doesn't like water getting dumped over his head, yet he was fine with this.