Mattress topper: Get a reflex or memory foam mattress topper! Portable: Lightweight and portable; take it with you! Construction: 5cm deep with a 100% polyurethane core and zipped polyester cover. How to use: Simply place on top of any mattress to help improve comfort. Size: Choose from single, double or king sizes. Reflex Foam Mattress Topper | Living Social | Living Social