It is designed to help your baby develop self-drinking skills. It facilitates the transition period from bottle to cup. It is designed in a small size, suitable for the mouth of babies and easy to hold with their tiny hands. You can easily use it both at home and outside. It supports your baby's oral health and easy sipping. It is durable and solid. It is fun and brightly colored. Does not contain BPA and Phthalate. There are 4 mini glasses in the set. CLEANING: Hand wash and rinse in warm soapy water before and after first and each use. Wash in the dishwasher only on the top shelf. Suitable for steam sterilizers. WARNING: This product should always be used under adult supervision. It is not a toy. Not suitable for hot drinks, oven, microwave.