Unicorn Magic Double Walled Cup & Straw with Charms Material: Polystyrene (Body and Lid) and Polypropylene (Straw), Polyester, Silicone Food Safe: Yes Microwave Safe: No Dishwasher Safe: No Reusable: Yes BPA Free: Yes Volume: 500ml Product Information: Our double walled cups keep cold liquids cooler for longer. They are not suitable for hot liquids. Safety Information: The straw is not suitable for children under 5.