The Lyra Collection presents our line of copper-infused memory foam mattresses that form to your body, creating a customized sleep experience that is as unique as you are. The Cool Touch Cover regulates body temperature and wicks moisture away, for a cool and dry night’s sleep no matter the season. Our 12-inch split Twin XL Eastern King mattress features triple layer construction that consists of: 3-inch copper-infused memory foam, 2-inch of plush foam and 7-inches of high density base foam. The Lyra Collection’s selection creates the perfect fit for your personal sleep experience. This mattress is Made in the USA.