20oz Tumbler with Lid and Straw: the body is made of food grade 18/8 STAINLESS STEEL which is unbreakable and durable, never rust and no-metal flavor. Each tumbler comes with 2 reusable straws. In dimension, the lid diameter is 3.4", the body height is 6.6" while the bottom width is 2.8". By the way, the 20oz coffee tumbler is the perfect size for everyday use and most Car Cupholders Friendly. | P