The sealy pure charisma 1400 memory pocket mattress contains 1400 individual pocket springs and has a deep layer of pressure relieving memory foam which rests on top of the springs while the cover includes tencel fibres to help keep you cool and drythe mattress supports the body at key pressure points helping to distribute your weight more evenly for deeper undisturbed sleep the enhanced underside of the mattress prevents slippage and movement on slatted bases making them ideal for use with al