Memory Sleep. Miracoil springs and memory foam. 25mm of body moulding memory foam combined with the 3 zone spring system creates a great balance of support and comfort, with extra support in key areas. Silentnight's own EcoComfort Fibre is proven to dramatically reduce heat build up. The cover is high density stretch fabric which is micro quilted in place. 5 year guarantee. And buy this Memory Sleep Was £219.00 Now £199.00.