Breathable backsheet allows air to freely circulate and allows patients to garner the benefits of a low air loss bed. Contains super-absorbent polymer for maximum fluid retention while reducing odor and keeping wetness away from skin. 23 x 36 inch dimensions cover a large surface area. Easy clean up, simply discard a used underpad and replace with new one. . WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov