Gel Memory Foam Mattress Topper (Queen) 2" of 3lb breathable Cool Gel Memory Foam open-cell technology prevents lasting body impressions Super-soft, removable and machine washable cover No slip bottom helps keep topper in place while you sleep Hypoallergenic, PVC & Phenolphthalein Free, Dust Mite Resistant Ventilated to increase air flow and regulate sleeping temperature