I received the 13 inches plush mattress after being delayed on extra day by FedEx. As required per instructions, I didn’t allow my grandson to sleep on it until after 50 hours out of the 72 required hours recommended. Now 96 hours passed and the mattress height is 12 1/2 inches. My grandson love his new mattress and said that he was very comfortable. I’m glad I purchased this mattress for him.