Our baby rattle is made of natural beech wood and food-grade silicone beads The beechwood is hand-sanded, non-toxic, has no smell, and is safe for your baby. The wood rings make a crisp sound when the baby shakes the rattle, which can attract your baby's attention and help your baby's focus while nursing or to stay happy with natural teething pain relief. Lightweight and easy to grab Can be easily attached to pacifier clips Wipe clean only. Barbell (5" L x 1.8" W) DO NOT STERILIZE.