I bought this item after my Zinus mattress became defective. Zinus refused to honor their 10 year warranty stating my mattress wasn't defective. The instructions they gave was to put a rod on the mattress and take a picture so they can determine how much of a slope it is....anyway, I really hope that Beautyrest is not so cruel! I love it so far. It's only been 1 day. I hope it last! It's really comfortable!!