No truth in advertising here.

What a crock this Mattress Firm claim is. I commercials they suggest you should replace your mattress every eight years because they become heavy with mites, dry skin, and all kinds of other made-up things. Sure, they want you to buy a new mattress. I've had my Serta for 15 years. It is still comfortable and I don't think it has gained an ounce. I have to lift each corner every time I make the bed and it's the same weight it always was. I can't think of anything that has increased in price as much at mattresses. Now Mattress Firm is pulling a scam to convinced us replace them every eight years. Absolute bull!