Batting is your personal preference, but for infant and children quilts we recommend using 100% cotton batting or bamboo. Polyester is essentially spun plastic and, in case of fire, it will quickly melt and burn the child. Natural batting (cotton, wool, bamboo) will not ignite as easily providing at least some degree of protection. We currently carry Warm Blend (80% cotton, 20% poly), Warm & Natural (100% cotton) and Bamboo (natural). Cotton battings “breathe” and are somewhat heavier, while polyester batting is lighter weight and tends to be warmer because it does not “breathe” like cotton, and natural batting is lightweight.