Cotton "Adaptable Comfort: Easily adjust the pillow's filling to customize the perfect size for your baby. Dimension of pillow: 32 inches x 20 inches Your Choice, Your Baby's Comfort: Experience ultimate comfort with our innovative pillow, a blend of two luxurious fabrics. Use the user-friendly design to open and close according to your child’s preference. Breathable Luxury: Our pillowcase features premium 3D air mesh and cotton. Effortless Maintenance: Enjoy the convenience of easy upkeep with our machine-washable, removable cover. Keep your pillow consistently fresh and clean with minimal effort. On-the-Go Comfort: The Gomigomi Pillow's lightweight and portable design make it a breeze to provide your loved one with a cozy and comfortable feeding and playing experience wherever and whenever you need it.