6 months & up. Bright colors and soft silicone makes these perfect for exploring and teething. Suction cups attach to smooth surfaces for stationary play and are removed with a fun "pop". Plastic rings rattle when flipped and shaken. Encourages sensory exploration, cause-effect learning, early experimentation. Each PipSquigz™ measures approximately 5 to 6 inches. Both teething toys are BPA-free.