4 inch Memory Foam Mattress Topper with washable cover and strap

BedStory Mattress Topper Twin, 4 inch Memory Foam Mattress Topper Single for Back Pain Relief & Cooling Sleep - Bed Topper with Removable & Washable Cover - CertiPUR-US Certified. Gel-copper layers keep you cool and fresh all night. Stays put with non-slip base and adjustable straps. Machine washable cover keeps maintenance hassle-free. Gently used for less than 3 months. Selling as moving.