Introducing our Custom 400ml Double Wall Stainless Steel Vacuum Tumbler with Lid and Steel Handle! Made in our top-tier factory, this product offers the perfect combination of style, durability, and function. Its double-wall insulation ensures maximum temperature retention, keeping your beverages hot or cold for hours on end. The stainless steel construction adds to its long-lasting quality, while the included lid and steel handle provide ease of use and comfort. Perfect for the on-the-go lifestyle, our tumbler is customizable to fit any branding or personalization needs. Order now and experience the ultimate drinking experience!