The 20oz tumbler featuring the BTS and BT21 Army design is an eye-catching accessory that includes a transparent lid and a durable metal straw. This versatile tumbler is perfect for enjoying both hot and cold beverages, ensuring that your drinks maintain their ideal temperature for up to 24 hours. Whether you're sipping on a steaming coffee or a refreshing iced tea, this tumbler combines style and functionality, making it an essential item for fans and drink enthusiasts alike.