Pregnancy Cover: 95% Cotton + 5% 3d (Density) Cooling Spandex Cozy Removable Cover - The pregnancy pillow cover is made of 95% cotton + 5% 3d (density) cooling spandex which is softer, cool, durable, skin-friendly and machine washable! Both the outer and inner body pillow cover come with double zippers which allow you to adjust the filling to reach your own height. The soft filling is 7D polyester which is carefully picked and selected by hand. It is supportive and retains fluffiness for better performance and longer use. Use for Pregnant Mommy 1.The right sleeping position can help improve blood circulation which supplies gravida and fetus blood flow regularly at the same time while sleeping. 2.Prevent or relief various body pains especially the 3rd trimester pains. 3.Can be use as the nursing pillow after childbirth.