Sleep Joy 2-inch Orthopedic Gel Foam Mattress Topper, Twin X-Large Liquid gel-infused orthopedic foam provides pressure relieving comfort and added support Firmer sleeping surface provides more support than memory foam 5-Zone contoured design provides support where you need it most Breathable material won't overheat and is odor neutralized for a fresh scent Enhanced with plant-based ingredients for a lower impact on the environment