The straw bottle is made from the beautiful Tritan material. It has soft and flexible handles to make it comfortable for the baby to hold. The straw is no-spill and has a variable flow. , , The lid is easy to open even for the child. It has a heavy ball at the bottom of the soft silicone straw, so the cup can be used even upside down, because the gravity will move the ball to the liquid. , , Cleaning: Rinse the straw soon after use and clean the other parts with liquid detergent and warm water. All parts are dishwasher safe (top shelf). All parts, except the cup itself, can be boiled. The cup can be sterilized by using a UV sterilizer. , , Warning: Do not place the cup in a microwave as the ball contains metal. Do not heat the bottle to more than 70 degree C.