ABOUT THE COLLECTION:The Royal Sovereign Collection represents timeless elegance and refined comfort. Made using materials like luxury wool and latex, it features patented Kluft Standard and a Belgian Jacquard Damask cover with exclusive BioCeramics technology for the ultimate sleep experience and recovery. View all mattresses in the Royal Sovereign collection. . QUILTING LAYER:Over 40 patented, handcrafted outer tufts that allow the mattress to breathe while holding fibers and upholstery layers in place, improving support while minimizing deep body impressions. Materials: Belgian Jacquard Damask, silk/wool fibers, Hi-loft FR fibers, plush quilting foam, firm quilting foam, cotton backing fabric COMFORT LAYER:8 lbs. of natural cotton keeps you cool and comfortable all night long. Durable and supportive comfort layer. Unmatched for it's durability, cotton enables the mattress to breathe naturally and prevents the build up of heat and moisture. Materials: 8 lbs. cotton SUPPORT DETAILS:Conforming, individually wrapped zoned nested coil provides comfort and support surrounded by a high density foam encased perimeter. Provides more support where you needed most. Materials: Nested zoned individually wrapped coil unit, HD foam encasement BOX SPRING:Cushioned wood platform covered with luxury Belgian Jacquard Damask, non-skid top, and a dust cover on the bottom. Materials: Wood