Add a soft and comforting top layer to your mattress with this Premium Cooling 4-Inch Dual-Layer Memory Foam Mattress Topper from Casaluna™. This machine-washable mattress topper is made from 100% cotton with a box-stitched design. Plus, it boasts four-inch filling with cooling dual-layer memory foam for enhanced comfort. It's sure to help increase the lifespan and comfort of your existing mattress.