FY-LIVING Memory Foam Mattress Topper Twin 2 Inch, Cover Washable with Non-Slip Bottom, 1-Pack REMOVABLE COVER: Breathable machine-washable plush cover. MAXIMUM COMFORT: Memory foam effectively shapes your body and relieve body pressure and promotes muscle and spine alignment. LONG LASTING FUNCTION: Memory foam maintains shape and great support throughout nights. It also responds to pressure to mold to your shape by creating all-around support. MULTIFUNTIONAL: Great for home use or take it with you in the travel bag while traveling. Can be used as a knee support pillow, lumbar support pillow or leg spacer. SUPERIOR QUALITY: Memory Foam is resistant to dust mites, bacteria, mold and bugs.