Hypoallergenic: Superb for people with asthma as the foam is anti-microbial and dust mite preventative - ideal for a fresh and healthy sleeping environment. Sizes: Choose small single, single, small double, double, king or super king. Mattress: Get comfortable with a bubble quilted memory foam sprung mattress. Memory foam layer: Contours to your body's natural shape, relieves pressure points and encourages correct spinal alignment for a healthy sleeping position. Comfort: A 25cm mattress with 13.5 open coil bonnell spring and a medium firm comfort rating - perfect for a supremely comfortable night's sleep. Quilted: Four-way stretch fabric and deep micro quilting for extra comfort. Bubble Quilted Memory Foam Sprung Mattress | Single | Living Social