This stacking tower was not awarded gold at the Toy Fair (2018 Child Excellence Awards) for nothing, because it offers various elements that are valuable for your baby: promotion of fine motor skills through sticking and stacking, perception of size ratio, colour promotion. The soft silicone satisfies the urge to chew and helps to relieve pain caused by teething. The rings are numbered: You can encourage your child to learn their first numbers from a certain age. Material: silicone, tested non-toxic (phthalate and Bpa free). Easy to clean with soapy water.