Natures Sleep Cool IQ King Size 2.5 Inch Thick, 4.5 Pound Density Memory Foam Mattress Topper with 18 Inch Fitted Cotton Cover Price:  $219.99 (as of 18/10/2017 13:01 PST- Details)

2.5 Inch Thick, High Density 4.5 pound Visco Elastic Memory Foam
Green initiative: infused with natural charcoal to reduce odor, manage moisture and help purify the air.
Provides a negative ion charge to help restore your body’s energy balance.