Featuring flex-and-fit motion-activated technology, the Bedgear StretchWick 3.0 Mattress Protector complements the contours of the mattress and your body while providing 4-way stretch for a perfect fit that won't slip or bunch over time. With a breathable, waterproof barrier to protect your mattress, this mattress cover provides exceptional sleep comfort with enhanced airflow to keep you cool.Manufacturer style #: BGM34AWF. 4-way stretch allows cover to move so it doesn't bunch or slip Breathable, waterproof barrier Enhanced airflow keeps you cool