This depends on how you sleep and how much back support you need from your mattress. There are three sleeper styles; • Back – those who sleep flat on their back • Side – people who sleep most comfortably on their sides. • Front – those who have the best night’s sleep lying on their front. The mattress you choose will be highly dependent on the way you sleep, so use our Choosing Your Mattress Guide to find out which mattress is best for you.