Ashley Furniture Signature Design - Sierra Sleep - Mygel Hybrid 1300 Mattress - Traditional Inner Spring King Size Mattress - White HYBRID KING MATTRESS: The combination of memory foam and coils makes this mattress a winner. You get the best of both worlds  comfort and support. With an easily washable knit cover, you'll have convenience and peace of mind for cleaning GEL MEMORY FOAM: Mattress is made with layers of contour-supporting gel-infused memory foam, high-density base support foam and wrapped coils. Thanks to cooling gel technology, you'll stay cool throughout the night with no problems COIL SUPPORT: Mattress base has a bed of individually wrapped coils for added back support and comfort for a full night's rest KING SIZE: Measures 76 W x 79 D x 13 H to fit a king size bed frame QUICK SET UP: Simply unpack and place the single mattress on top of your foundation or box spring (sold separately) to instantly enjoy DIRECT FROM THE MANUFACTURER: Ashley Furniture goes the extra mile to package, protect and deliver your purchase in a timely manner BUY WITH CONFIDENCE: Designed and manufactured by Ashley Furniture Industries. The trusted source for stylish furniture, lighting, rugs, accessories and mattresses. For every taste and budget. Since 1945 bunk beds queen twin desk kids camper daybed core futon mattresses