Saatva Graphite Memory Foam Mattress Topper "Body-hugging comfort with advanced cooling technology" Features include •Pressure-relieving memory foam infused with graphite, the most advanced cooling technology, to keep you cool & comfortable all night •Helps reduce motion transfer •Cover made with naturally breathable and moisture-wicking organic cotton •Exclusive Guardin™ botanical antimicrobial treatment inhibits the growth of bacteria, mold, and mildew. See more details on their website. Recently purchased for almost $400, only tried a few nights, but wife wasnt satisfied. Too difficult to return as it arrived vacuum packed and compressed. PLEASE NOTE: Cal King size (84"L x 72"w).