Outlast Temperature Regulating Waterproof Mattress Protector - White (Queen). Sleep better. Live better. 300-thread count, 100% Cotton Cover Outlast Certified Gold Liner Polyurethane backing and five sided protection make this completely waterproof. Outlast technology absorbs, stores releases heat Balances temperature around your body and maintains optimal sleep temperature. Provides thermal compatibility with your partner Hypoallergenic It s not too hot. It s not too cold... It s just right. Outlast technology, originally developed for NASA, utilizes change phase materials (PCM) that absorb, store and release heat for optimal thermal comfort. Outlast technology buffers against temperature fluctuations, helping to keep your personal microclimate steady and comfortable. Outlast technology doesn t just wick moisture away from the body it helps to proactively manage sweat before it begins. When you overheat, your body naturally releases excess heat and sweats to cool the skin. Outlast helps alleviate these spikes in skin temperature that cause sleep disturbances by absorbing and storing the excess heat. As you cool, the stored heat is released back to the body to keep you at the optimal temperature. This cycle continues throughout the night, so you wake up feeling more refreshed and rested. Built in mattress protection The polyurethane lining on the back means that your mattress will always be protected from spills and accidents. Get that cool, crisp, off-the-line freshness every single night. Order your Outlast Temperature Regulating Mattress Protector today!