65% Polyester, 30% Viscose, 5% SpandexHELP SOLVE YOUR SLEEP PROBLEMS -- Sweet night King mattress is made of 4 layers & zoned Gel Memory Foam. Patented memory foam mattress keeps your body properly aligned, fully supported and relieves pressure at a comfortable, cool Temperature. Helps those with back pain, sweat. Feels rested and recharged from your partner nighttime tossing and turning.TWO SIDES AVAILABLE TO SLEEP -- The King size mattress is designed to be flippable; allowing you to sleep on either side. The Top side with Gel memory Foam layer, is perfect for those who like sleeping “in” the Sweet night mattress with a soft, cloud-like feel; while the bottom side with high density supportive foam, is great for those who like sleeping “on” a medium King firm mattress. Ideal for all sleeping positions, especially for side sleeper.HEALTH & KING MATTRESSES -- certipur-us Certified foam Made without harmful substances like formaldehyde, Mercury, or other heavy metals. This King mattress cover is made with breathable Rayon fabric. As with most new purchases, any “new product smell” that you may experience is harmless and will dissipate in few days. Enjoy healthier sleep with this King memory foam mattress.COMFORT & LONG-LASTING DURABLE MATTRESSES KING -- This 10 inch memory foam mattress King is made of cooling gel infused memory foam that slowly adjusts to your body weight & temperature, reduces heat at sleep surface. Comfort foam with split 3-Zone design, a firmer middle section to ease pressure points, provides balanced support and eliminates motion disturbance. 3” high-density foam for durability and performance, strengthens edge-to-edge support, resists sagging and roll-off.SMARTLY SHIPPED & 10 YEARS NO RISK PROMISE -- Our King foam mattress is compressed, rolled & shipped in a box to your door. Easy to move through narrow hallways and staircases. Fits all frames, such as box Spring, adjustable and slatted base, even hospital bed. We are the manufacturer. A high quality mattress at a fair price. Your mattresses come with 10 Year limited. Over 96% of our customers keep the mattress and recommend it to others. We offer 24/7 service, Contact US freely!