Offering some of the best features of the Dri-Tec 5.0, the new and improved Dri-Tec 5.1 Mattress Protector, takes things up a notch. Starting with the fabric, having a new hexagonal pattern, this protector, brings the quality Bedgear performance protection in triple layer, format. The protector surface is flexible, and reacts to motion, dynamically, delivering the best comfort to the individual. Plus, it is both odor resistant and may be washed in a high efficiency, machine washer. There is an actual waterproof back on this upgraded protector, but it will not interfere with sleeper's comfort feeling from the mattress. As a matter of fact, there is an enhanced conforming aspect; in addition, it reduces issues related to heat complaints as well. A fine Powerband® secures the protector to the mattress, with a grip that even an adjustable base cannot dislodge. No bunching up under the sheets either. The Dri-Tec 5.1 Mattress Protector works for mattress profiles up to 18" in height.