Introducing our Custom 400ml double wall stainless steel vacuum tumbler! Made from high-quality stainless steel, this tumbler is durable, long-lasting, and perfect for use at home, work, or on the go. The double wall vacuum insulation keeps your drinks hot or cold for hours, making it ideal for coffee, tea, water, and other beverages. The tumbler comes with a lid and steel handle, providing you with a secure grip and spill-free drinking experience. Plus, as a factory brand, we take pride in our quality and craftsmanship, ensuring our products meet the highest standards. Get your hands on this amazing tumbler today!