Sprung: 13.5-gauge bonnell open coil spring system for extra support. Features: Micro quilted cool touch panel, providing a comfortable and cooler sleep. Hypoallergenic: With anti-dust mite properties for healthier and cleaner night's sleep Mattress: Get a Grey Castle quilted mattress. Sizes: Option of small single, single, small double, double or king. Memory fibre: Plus a layer of high density visco-elastic memory fibre which can mould and adapt to the shape of your body. Aims to: Relieve pressure across the body. Quilted Sprung Mattress | Blue | Single | Living Social