For a comfortable nights sleep, choose the 1200 Pocket Spring Memory Foam medium to firm mattress. It has 1200 individually housed springs providing unmatched comfort as they react to your body's every move. Working independently, these respond to invdividual body weight making it ideal if there's a size difference between you and your partner whilst minimising the risk of you rolling towards each other during the night. A generous 50mm of memory foam adds additional comfort, but be careful not to flip your mattress over or you will move this memory foam layer to the bottom and out of use - we recommend you rotate regularly to ensure you get the maximum longevity from this mattress whilst still utilising all of its features. With a super-soft quilted cover and hypo-allergenic fillings, this mattress has been manufactured in Britain and comes with a 5 year warranty, so you can have full confidence in its quality and durability.