About this item 【Comfortable & Supportive Hybrid Mattress】 The 7-zone independent wrapping coil is located in the core of the mattress. High-quality pocket carbon steel coils are highly flexible and can provide excellent customized support for your skeletal system. Koorlian mattress perfectly balanced 7 parts of your body to relieve back and neck pains. 【Sleep More Soundly】Luxury Multilayer Foam and Breathable Knitted Fabric Cover Keeps your mattress fresh and cool,so you can enjoy cool and comfortable sleep all night,wake up feeling refreshed and ready for the day. Whether you are a side sleeper, back sleeper, or stomach sleeper, the Koorlian mattress always gives you a more quiet and deep sleep experience. 【Motion Isolation & Edge Support】Individually Pocket Coil Spring and the support of high-density base foam, limit bounce and absorb motion disturbance between partners. You and your partner both dream sweet dreams, will not be awakened by noise. The edge support of this mattress has been strengthened, you will not roll off or be ejected from the mattress. 【Quality mattress to Sleep on】Designed with Premium Foams for safety,made without any harmful chemicals.that‘s both comfortable and Eco-friendly. Twin mattress supports a maximum weight of 250 lbs, while all other sizes can support up to 500 lbs. 【King Bed Mattress In a box】Koolian mattress arrives in a well-packed box so you can easy to move and set up for your room.Please allow 72 hours for your mattress to fully expand after opening.