Our teething rings have been engineered to fulfill a purpose. The circular shape of the Happy Teether offers an easy grip from any position. The silicone material and grooved pattern give sufficient resistance to tender gums and incipient teeth. It helps to soothe gum discomfort during teething. Its size of 4.5" in diameter makes it simple to grasp for small hands. Recommended for ages 0 months and up. The easy-clean design allows for wiping with soap and water or running through the dishwasher. Made of 100% food-grade, FDA-approved silicone.