Beware of Stress-O-Pedic mattresses!  Furniture Plus has great prices on mattresses...or so I thought.  2 years ago I bought a queen SOP Posture Correct mattress because it was so comfortable in the store.  They delivered it and set it up...wonderful.  One problem.  This thing had such a strong odor I had to take it outside and let it air out for almost a year!  Stress O Pedic uses poly urethane foam which has some horrible properties.  Number one...toxic fumes.  Two...highly flammable.  Three..they hose the mattresses down at the factory with flame retardant chemicals that are known carcinogens.  I tried to return the mattress but got screamed at by the sales person over the phone.  So dont expect there to be any warranty.  I had to use a plastic mattress protector to keep the fumes from killing me.  \nWe need to wake up and check what our mattresses are made of.  Many of our pains and health problems come from sleeping on a toxic mattress.  Buyer beware.