The Tri Chew was designed with ridges, bumps, and swirls on each end to simulate the various textures of food used for chewing. Jaw movement and pressure can be experienced through the varied sizes of the ends which are also small enough to prevent gagging. The textured sides provide sensory input for the lips, gums and tongue. The soft material may provide comfort and calm a teething baby. The triangular shape makes it easy for little ones to hold. Not recommended for aggressive chewing.