The inner liner is made of 304 stainless steel, which can maintain the temperature of your drink for 6-12 hours. Above the cup is a transparent plastic lid that can be opened with your fingers and you can drink directly. The inner liner is made of 304 stainless steel, which can maintain the temperature of your drink for 6-12 hours. This mug is not just a vessel for your favorite beverage but also a distinctive promotional item to showcase your brand. Personalize this mug with your brand logo, slogan, or a custom graphic. Our advanced printing techniques ensure a vibrant and lasting imprint.