Stimulate babys sore gums! The textured water-filled ring gently vibrates as baby teethes. This teether can be chilled in a refrigerator for a cooling sensation. Introduces: - Sensory Awareness Suggested Play Ideas Show baby how the teether vibrates by gently squeezing the water-filled ring and allowing baby to touch it. While the teether is vibrating, help baby place it in her mouth so she can feel the gentle vibrations on her gums.Teether may be refrigerated before giving it to baby for a cooling sensation.