The Firm Comfort features Silentnight’s unique support system with 750 Miracoil springs offering zoned support for perfect spinal alignment. The mattress gives you ideal pressure relief for a comfortable night’s sleep. Whilst being deep quilted through firm filling layers for firmness & comfort. Unlike ordinary springs that are circular the Miracoil shape spreads your weight evenly across the bed relieving the pressure on the most painful parts of your body like your lower back. • 750 Miracoil springs • 3 Zones of Targeted Support • luxurious stretch knit cover • Easy care no turn mattress • Deep quilted