This Guardmax Mattress Protector fits a King Size Mattress that measures 78 x 80 x 12. It stretches to fit a mattress with a depth up to 14 inches. The Guardmax Mattress Protector is jersey knitted in order to combine protection with comfort. The mattress protector fully waterproof andcomfortable to create a relaxing night's sleep. The Guardmax mattress protector does exactly that. It protects your mattress against any and all liquids. Whether it is a drink or urine no liquid spill will penetrate through the heavy gauge vinyl Made from a heavy duty vinyl, the Guardmax Mattress Cover is soft, breathable, and extremely comfortable. Gone are the days of feeling like you are sleeping on a plastic mattress case and welcome to full protection without compromising on comfort. The Guardmax Mattress Cover protects against dust, dirt, and dander. When you go to sleep on a Guardmax Mattress Protector you don't have to worry about sneezing throughout the night anymore. Sleep allergy free with Guardmax. Our mattress protector provides water resistant protection. Seals out moisture, sweat, and anything wet. Our breathable fabric won’t leave you feeling hot, sweaty, or uncomfortable. It’s easy to take on and off.