This topper has worked a lot better than all the much more considerably more expensive things (recomended previously to me) that i tried before it.  What had put me off was that i needed it for a 2'6" x 6'6" adjustable bed mattress and this topper was 3' x 6' 3" - it stretched to fit however and took away more heat from the mattress than anything previously tried.  Try 1st for this application and save yourself a lot of money.