Coil sprung: Designed with a European engineered 13.5 gauge open coil spring system, evenly distributing weight. Mattress sale: Get a children's open coil sprung mattress. Size options: Choose from small single, single, small double, double or king. Comfort: Constructed with a layer of next generation visco-elastic memory fibre foam. Anti allergenic: Features with hypoallergenic and anti-dust mite fillings. Children's Open Coil Sprung Mattress | Small | Living Social