BABY PLAY: Invite your baby to play with the Key Rattle and enhance their fine motor skills and hand-eye coordination as a result! Sensory development is also stimulated as newborns watch, listen to and handle the rattle freely. Made to fit tiny hands, all edges are softened to ensure safe play! INTENTIONALLY-DESIGNED: Handmade using wood from rubber trees and outfitted with a natural wooden appearance. Free from harmful substances and toxic finishings. Suitable for children 4 months and older.