12-Inch Hybrid King Mattress in a Box with Cooling Gel Memory Foam & Pocketed Coils for Pressure Relief & Motion Isolation, CertiPUR-US & OEKO-TEX Certified, Medium Firmness for Couples & Families

12" hybrid construction combines cooling gel memory foam and 1000+ pocketed coils for balanced support and motion isolation, ideal for shared sleep environments CertiPUR-US & OEKO-TEX certified materials ensure toxin-free sleep with hypoallergenic fabric tested against over 300 harmful substances Expanded 76"x80" King size provides 16" wider sleeping area than Queen mattresses, accommodating active families and pets with unrestricted movement Reinforced perimeter support maintains edge stability for 800 lbs distributed weight, preventing sagging even with high-traffic use Boxed delivery system simplifies installation—expands to full size within hours and fits standard King frames without requiring special foundations