This is a mattress designed for people who prefer to sleep on a mattress which is super firm & super supportive. This mattress has a very firm orthopaedic spring system in it which is very supportive & very durable. On top of the springs is a firm “insulator” pad which keeps the mattress feeling firm for many years & prevents the springs from ever being felt through the comfort layers. The sleeping comfort layer on this mattress is a thick hypoallergenic layer which has a slightly softer feel to relieve pressure points & ensure a restful night’s sleep. Mattress is 24cm deep Firm orthopaedic springs Extra firm support Top quality damask fabric cover Durable & supportive mattress Next day delivery