A 40/64-Ounce Large Capacity Insulated Cup With A Simple And Fashionable Design. It Has A Double-Layer Drinking Opening That Can Be Used For Direct Drinking Or With A Straw. The Straw Cover Prevents Dust From Entering. The Inner Layer Is Made Of Stainless Steel, Which Is Easy To Clean And Does Not Stick To Stains. It Has 12-Hour Heat Retention And 24-Hour Cold Retention. The Leak-Proof Design Ensures No Leakage When Upside Down.