Anti-bacterial properties: It has hypoallergenic and anti-dust mite fillings for a cleaner and healthier sleeping environment. Mattress: Get a Harmony sprung six-core memory foam mattress. Padding: Generous levels of comfort padding on both sides to provide you with a medium soft comfort. Sizes: Option of small single, single, small double, double or king. Sprung: Consists of a traditional 13.5 gauge Bonnell open coil spring unit, which distributes the weight evenly across the mattress Memory foam: Designed with a layer of high density visco-elastic next generation memory foam which shapes to the contours of your body. Bonnell Sprung Memory Foam Mattress | Single | Living Social