<b>BREATHABLE MATERIAL </b><br> The pillow cover is made of 100% cotton fabric material to stay soft, <b>breathable, and dry on the skin even on hot summer night and <b>keep your head dry whole night. Machine washable capabilities <b>enables maintenance of its reusability and fresh appearance. <b><b> <b>CUSTOMIZABLE HEIGHT </b><br> Down-alternative stuffing adjusts to your posture and sleeping <br>position for better support; seamlessly regains shape as you lift <br>your head. The ultra-soft texture maximizes comfort while you <br>sleep. <br><br> <b>RELIEVE BACK AND NECK PAIN </b><br> Great for those back sleepper and side sleeper, and others with <br>respiratory difficulties. <br>Medical Device. Health and safety is our top priority!<br>