I have been looking for a mattress topper for my girlfriend's spring mattress (provided by the landlord). With several backpains and a few months later, I cannot stand it anymore and started looking for options and this is what I found. It made the bed several times more comfortable to sleep on and I am pleasantly surprised by how it complements the bed, even the spring mattress. Overall, I am very happy with the purchase and now I know what to do in the future.