The soft silicone spout is uniquely designed to be delicate and gentle to gums and teeth. The cap is specially engineered to prevent drips and spills when the hygienic cover is closed. Insulated stainless steel keeps liquids cool up to 10 hours. 18+ months 10oz/300ml Keeps drinks cool up to 10 hours Perfect for thirsty kids on the go Hygienic cover keeps spout clean when closed No-Spill when the cover is closed Hand wash only