Made up of tissue/poly, these McKesson standard pillowcases provide a pleasant user experience. Constructed of a strong, tear-resistant fabric with excellent durability, they can stand up to rough handling. The tissue outer layer provides a soft surface for comfort, while the inner poly layer contributes a hygienic barrier to protect the pillow from leak-through. The poly layer also provides fluid hold-out and extra strength. standard size pillowcases, they measure 21 inches x 30 inches, dimensions that fit most pillows found in hospitals and other medical institutions. These pillowcases are safe for use by those with allergic responses and sensitive skin.