Precision Fit & Hassle-Free Setup:Designed for King-size beds (76"×79"×10"), it arrives compressed in a box for effortless setup. Fits all frame types—platform, box spring, or floor. Allow 48-72 hours for full expansion. The box design simplifies handling and placement. Cooling comfort & healthier sleep:Memory foam infused with cooling gel provides pressure relief and temperature regulation. The hybrid design combines individually wrapped coils for customized support from head to toe. Fiberglass-free, OEKO-TEX, and CertiPUR-US certified foams ensure hypoallergenic safety and zero off-gassing for fresh, breathable air. Customized Support & Lasting Peace of Mind:Experience the precision of nearly 900 individually wrapped springs for targeted spinal support and minimal motion transfer. Zoned design offers softer shoulder support and firmer waist push-back. Tested 100,000 times with reinforced edges and high-density foam base for lasting, all-position support. Hybrid Value & Eco-smart:The hybrid design delivers premium comfort at a great value. No box spring needed—ready to use straight from the box. Compact shipping reduces our carbon footprint and simplifies storage. Heads-up: During the first a short period after unboxing, the comfort foam layers may not have fully expanded, which could make the mattress feel firmer than expected. Gently patting the surface can help speed up the recovery process. No-Risk Guarantee: At Luxysea, we're more than a brand - we're a symbol of enduring trust.Each bed in a box king size is manufactured under strict QC guidelines and inspected before being shipped to you. We offer 360-night trial & 10-year support. If you have questions or feedback about king size memory foam mattress, our dedicated team is always eager to assist. Luxysea mattresses are engineered with premium independent pocketed springs that provide targeted support and zero motion transfer, so you and your partner can sleep undisturbed all night. Filled with high-density comfort foam, it conforms naturally to your body, eases pressure points and aligns your spine for restorative sleep. The highly breathable surface layer circulates air continuously, wicks away sweat and heat to keep you cool and fresh. Skin-friendly, soft-touch fabric delivers a cozy, cloud-like feeling. For your safety, our fire-retardant certification is issued by accredited laboratories that meet the ISO 17025 standard, ensuring reliable quality and peace of mind for your family.