I am 170lbs and this topper is not able to support me. I woke up with back, shoulder and back aches for the entire month. I felt the pains after the first night but gave it more than my fair trial. I is not what I was looking for. For this price point, you are better off investing some more money and purchasing a mattress.
Couldn't stand this topper! It made the sheets slip around, and we were waking up several times a night to tuck the sheets back under the mattress. Took the cooling topper off and just using the tempurpedic topper now. Slippage is way down. Was a total waste of money, as it's not returnable. I don't recommend buying this product.
I tried the mattress and I loved it but the price was too much for me. I decided to try the topper not expecting it would be as good as it turned out. It's not the mattress but it's a good option if you don't want to spend the big dollars on the mattress.