After over a year of excruciating back pain when laying down I decided to buy a new bed - the Hypnos Hotel beds are reputed to be wonderfully comfortable. Well mine was so hard I had to put 5 quilt so top and gradually remove them so that I became used to a hard bed. This new bed didn't help at all - my back pain continued so that I considered buying a Lazyboy to sleep on. Luckily I came across Mattress Guru and decided to risk spending more money on a mattress topper. I opted for the extra thick one and it arrived quickly. It needed airing for a day (longer if you can wait) but couldn't wait to use it and I had the first pain free sleep in over a year! I have had it for a month now and it is bliss, it's quite amazing how it has totally changed my life. I was convinced I would never sleep again. I cannot recommend this mattress topper enough, if I had chance to buy it again I would opt for the cooler one as I do find myself getting quite hot, though the weather has been very warm lately. If you are uncomfortable on your bed, please try the topper, you won't regret it. Thank you Mattress Guru you've given me my life back again!