My husband and I love this mattress. It has helped both of us a ton. Neither of us are in pain like we used to be. It's helped with both our back problems and helped my hip pain a lot too. I have a sleeping disorder and have broken my hip in the past. I am now in less pain than ever when I get out of bed and I'm sleeping more than I have in years. I've even managed a day here and there where I've slept 8 hours. That's unheard of for me. Due to our health (both have allergies and asthma) when I first opened it I put a water proof/dust mite proof/ Bug proof mattress cover in here. I have the 8 inch mattress and it's amazing. We've had it for about a month, so I can't say how many years it last, but it comes with a warranty anyway so we're not worried.