I bought a 2300 Chatom and Wells mattress from Sit and Sleep with a Mattress pad that would guarantee the mattress from any stains. The mattress has sunken in over the five years and I called for the warranty inspection to have it taken care of. I was told when we bought it that any problems within the ten years that they would replace the mattress. The company sent out some guy who took measurements and said I would be contacted about the warranty. Approximately five days latter I received a letter from Sit and Sleep that due to a Stain on the mattress the warranty is null and void. The mattress pad sold to us was to guarantee the mattress warranty and not allow any stains to the mattress. The stain is the sized of a Quarter on a Cal. King mattress because the mattress paid did not due it job. I am thinking of filing an action against Sit and Sleep and Chatom and Wells but it is hard to get the information on the warranty from the company. Does anyone have any experience with this that can help us? It is obvious that Sit and Sleep did not back up the warranty on the mattress paid that would have not voided the warranty and you would think that a small stain would void the warranty. Anyone out there thinking about buying one of these should take note.