Nuby Gel Teether Keys are multi-surface teething makes this teether perfect for assisting in the eruption of front, middle and back teeth. It is easy grip design is ideal for little hands and helps with coordination. Dual Surfaced Teether combines exercise for young hands, gums, and teeth. The tops of the Nuby keys are constructed of a smooth textured material with offset surfaces. Nuby Ice Gel Teether Keys contains nontoxic purIce gel that lets it stay cool for a long time. Its cool textured surface soothes and stimulates sore gums. The teething nubs help massage tender gums. This colorful toy is a dual-surface teether. The bright colorful shapes stimulate your baby visually and also help with eye-hand coordination.