Design: Stitching patterns may vary. Mattress: Get a Cool Blue memory foam sprung mattress. Sizes: Small single | Single | Small double | Double | King | Super king. Memory foam: Moulds to the contours of your body and relieves pressure - ideal to encourage correct spinal alignment and supreme comfort when sleeping. Features: A spring mattress with a generous layer of Cool Blue memory foam. Sprung: 13.5 gauge coil spring for superior comfort and support. Cool Blue Memory Foam Sprung Mattress | Single | Living Social