100% cotton, gentle on baby's skin. Compatible with strollers, car seats, and baby carriers. - Model Name: 3D multi-sheet - Material: 100% cotton fabric, gentle on babies 3D mesh fabric with a three-dimensional structure containing approximately 95% air, providing excellent cushioning. - Target Age: From around 2-3 months old when the baby's neck is stable. *Not for newborns. - Applicable Products: Strollers, car seats, baby carriers I am selling this because I didn't use it. Thank you for looking.