I bought the single zone chili mattress pad and have had the first good nights of sleep that I have had in at least 7 years. My husband is the biggest fan. He says that I have stoppped tossing and turning all night, I no longer snore and he cannot believe what I am getting accomplished when I am awake! All I know, is that for the first time in many years, I don’t feel like death warmed over. I have suffered from hot flashes for ever so long and since I am a breast cancer survivor, doctors told me I just had to live with it. Well, not anymore. Thank you.