Polyester Soft and breathable: Our nursing pillow cover are made of soft, skin friendly polyester fabric, perfect for the delicate skin of newborns, giving them full comfort Personalized pattern: Our nursing pillow cases use colorful patterns, compared with ordinary nursing pillow cases, more distinctive, enhance the fashion sense of nursing pillow, while cultivating the baby's personal style Adaptable: Our breastfeeding cover fits most curved breastfeeding care pillows, the fabric is elastic and can perfectly wrap around the breastfeeding pillows Easy to care: Our breastfeeding pillow cases are designed with large zipper openings so you can quickly and easily put on and take off your breastfeeding pillow for machine washing Protect the baby's skin: Our nursing pillow cover are designed with a hidden zip, so whichever side your baby sleeps on will be comfortable and smooth DAYEEBALL nursing pillow cover is perfectly compatible with B-O-P-P-Y nursing pillows, and the elastic fabric is suitable for most curved nursing pillows on the market. It is made of soft, breathable, and skin friendly polyester fabric, which is very suitable for the delicate skin of newborns, fully ensuring the comfort of the baby, and making the baby grow strong. The nursing pillowcase has a hidden large opening zipper, making it smooth and easy to put on and take off. It’s machine washable, freeing up mother's hands and keeping the nursing pillowcase clean and the fashionable and colorful pattern is loved by both baby boys and girls, making it the best gift for babies and mothers.