Feel renewed with thePurple Restore Plus Firm King Mattress At its core are individually wrapped responsive coils from edge-to-edge with Edge Support Foam and a thick layer of firm Comfort Foamthat boostshape retention and make getting in and out of bed easier The 3 GelFlex grid draws heat away for optimal the sleeping temperature and maintains support of pressure points even while you move for personalized full-body support Maintaining freshness the SoftFlex cover is anti-microbial treated and stretches with the grid wicking away moisture to keep you cool and dry