Avent - Straw Cup The Philips avent straw cup is an ideal drinking solution for the growing toddler. It is leak proof and easy for the toddler to use independently with its unique twist lid. Features: Soft silicone straw with integrated leak proof valve Easy for the child to twist open and close the lid easily Twist-lid keeps the straw clean Completely interchangeable with the entire Philips Avent range All parts are dishwasher safe for�convenience