The Malarkey Kids Chew Cube is the mom-created modern rattle and teether. It provides four-way sensory stimulation, including soft, textured teething edges for tender gums; large flexible holes to help baby with gripping skills plus a black and white patterned rattle with mirrors to provide stimulation for baby's ears and eyes. The Chew Cube design and materials have been safety tested and exceed all global baby product safety standards, including CPSIA regulations. The teether surface is 100% food-grade silicone and is BPA, Phthalate and Latex-free. We suggest the cube be used by babies over 3 months. Truth be told, we play with it as grown-ups too! Approx 2.75"x 2.75"