Come and see our amazing products. The 300ML stainless steel cup lid is made of food grade stainless steel, durable and electro-polished inside to ensure your cup doesn't rust. Cylindrical shape so it can be installed in a vehicle cup holder for traveling.You could enjoy your beverage coffee,milk,cold in the office, take your cup of drinking on the go.Customized is available. Pls confirm further with us if any query about packing info, inventory status and time schedule.