Additional Details ------------------------------ Product description: P.E.T Cups and Lids: Made of High-quality Ultra clear durable P.E.T. material plastic. Perfect for keeping iced lattes, soda, or iced tea cold and securely inside your cup Tight Seal: The tight seal helps to prevent frustrating leakage near the cup's rim, and prevents spills from whipped cream, liquids, or ice which may go above the rim of your cup.