We originally purchased a king size Orthopedic chiro KG mattress & box springs from American Frieght on April 4, 2009. Within 30 days we had to return the mattress set as the mattress was sinking in and becoming miss shapened in the areas where we slept. On May 5, 2009, we returned the above mattress that was under a 10 year warrenty. When we arrived to return the mattress, they had no problem taking the mattress back and we even upgraded to a Stewart & Hamilton Excelsior pillowtop mattress and box springs. Within 6 months of having... read full review »