The Black Pearl Medium mattress offers medium comfort and a 20-year warranty. Available in Twin through Cal King sizes, it features a cool touch designer stretch knit fabric with copper thread for temperature regulation. Layers include CoolGel quilt foam, Joma Wool® Comfort Layer, and Serene plush foam, all hand-tufted for durability. It's built with a tri-zone encased coil unit, dual steel coil perimeter edge, and Copper Infused Synthetic Latex Layer for comfort and support. Adjustable base friendly and certified foam, proudly made in Wisconsin.