Featuring a deep layer of memory foam with pocket springs the relyon diamond pocket memory 2400 mattress offers enhanced support and responsiveness for a superior sleep surface the mattress has 9cm of memory foam 2cm in the mattress itself and 7cm in the pillow top for a sumptuous finish available in three sizes this premium quality mattress will make a welcome addition to any bed in the homeplease note spring count refers to a 5ft kingsize modeldimensionsbull double w 135cm x l 190cm