Spesification: - Made form corn, Good, Green & Safe. - Durable,freezable, microwavable and dishwasher safe. - Large cup can hold upto 310ml of liquid. - Its edge lip around the cup helps children to drink without spilling - Silicone ring on the bottom prevent slipping on the table - Hot water safe therefore can be used as soup bowl as well - Do not sterilized this product, if you wish to sterilized rise with hot water