For a upgrade to the basic mattress, the LINENSPA 5 Inch Gel Memory Foam Mattress offers the benefits of memory foam and firm support. A comfort layer at the surface features a 1 inch layer of gel infused memory foam that compresses to hug curves and alleviate pressure. Infusing the memory foam with gel material helps to distribute heat to maintain a comfortable temperature. Beneath the comfort layer, a 4 inch layer of high density support foam offers the support you need to wake up refreshed. This mattress has a low profile, so it is a perfect fit for bunk beds and trundle beds. It has a soft, breathable fabric cover and comes with a 10 year warranty from the manufacturer. 5 Inch Thick Memory Foam Mattress With Firm Support 1 Inch Comfort Layer Made Of Gel Infused Memory Foam For Pressure Point Relief 4 Inches Of High Density Base Foam For Proper Back Support Mattress Is Rolled Compressed And Boxed For Convenient Shipping And Setup California King Mattress Measures 72 Inches By 84 Inches And Comes With A 10 Year Warranty Mattress Type: Mattress In A Box Features: Breathable, Mattress In A Box, Memory Foam Measurements: 74 Length/Inches, 53 Width/Inches Base Material: 20% Rayon Fiber Content: 60% Polyester, 40% Viscose Care: Spot Clean Country of Origin: Imported Visit our Furniture & Mattress Customer Care Center for delivery options, protection plans and other services. Problem with an order or need help with a return? Our Furniture & Mattress Customer Service agents will be happy to help. Give us a call at 1-800-442-7902 Don’t forget to print off your delivery checklist to avoid any delays or issues when delivering your item. Includes mattress only. Mattress plus box spring option also available.  Mattress arrives compressed in a box and then regains its size and shape after opening.