The BPA FREE Wacky teething Ring by N�by features raised, offset surfaces that assist in the eruption of teeth by gently massaging infant�s gums. The teether is also easy for your baby to hold and sized for maximum effectiveness. Soft, colorful fabric crinkles with babys touch. Each of the textures has been specially designed for the front, middle and back teeth teething. For front teeth teething: Skin Soft Silicone uniquely developed for when baby is beginning to teeth. Silicone bristles gently massage tender gums and aids in the break through of new teeth. For middle teeth teething: Introduces greater press with large teething surfaces to aid in the eruption of new teeth. For back teeth teething: Firm surfaces and Massaging Nub-eez offer greatest pressure and assistance in this teething stage. The Wacky Teething Ring is sized for maximum effectiveness and is easy for your baby to hold. The soft, colorful fabric crinkles with your baby's touch!