The Aere Crystal Gel Mattress Protector is a breathable and 100% waterproof barrier that will extend the performance of your mattress, while providing you and your family with a hygienic and comfortable sleeping area. Did you know a mattress can increase in weight over a period of time due to sweat, dead skin cells, liquid spills, dust mites and mold build up? This can cause staining to the surface and can void most manufacture mattress warranties. Aere Crystal Gel is designed with the use of innovative cooling crystal gel fibers that absorbs heat and dissipates it away from the body for an ultra-cool sleep. The revolutionary tactile technology 3D fabric is machine washable and allows for excellent airflow that helps moisture evaporate faster and providing a barrier against dust mites and pet dander. The luxurious fabric stretches to conform and doesn't alter the feel of the mattress, allowing you to get a peaceful sleep. Deep corner pockets on the Aere Crystal Gel sheet stretch to provide an easy and sturdy fit to the mattress. The Fashion Bed Group Aere Crystal Gel is available in Twin, Twin XL, Full, Full XL, Queen, King, California King and Split King mattress sizes, and comes with a 10-year limited warranty.