The sealy posturepedic collection zoned memory cushion top double mattress is sumptuously micro quilted with a soft knit cover providing extra comfort for a medium feel the layer of memory foam moulds to the bodys contours and relieves pressure points supported by sealys patented posturetech 620 spring system which gets firmer as pressure increases eco friendly sealy smart fibres with tencel are endorsed by allergy uk for the reduction of dust mites no need to turn just simply rotate with