Sheetsnthings Lyocell from Eucalyptus Tencel Jacqurad Mattress Topper, Twin Extra Long Size Tencel Twin XLmeasures 39 inches by 80 inches 60% lyocell from eucalyptus tree 40% polyester Fits Mattress up to 15" deep Features a stitched Wavy Shape Design to keep filling in place. Machine wash in cold water