Hypoallergenic: Hypoallergenic mattress with FR regulated for UK safety. Mattress: Get a memory sprung mattress. Material: Filled with multiple cotton fibre fillings along with soft polyester fillings. Support: 8M wire edge for extra support on both sides of the mattresses. Sizes: Available in single, small double, double, king or super king. Comfort: 40kg M3 memory foam layer. Lisa Memory Sprung Mattress | Living Social