Pr1me® Smooth Mattress Protector Split Queen The Pr1me® Smooth mattress protector features a hypoallergenic and a breathable, smooth fabric surface that sleeps comfortably and will not change the feel of the mattress. It also features the laboratory-certified H2Pro®liquid-proof membrane which creates a quiet, and breathable barrier against allergens and dust mites while allowing for airflow. The universal fit elastic ensures a secure fit for mattress depths of 6"-22". Pillow protectors are also available to create a healthy sleeping environment. L : 20.5 - W : 20.5 - H : 10 - W : 23