The 18oz (550ml) Double Wall Stainless Steel Vacuum Tumbler is a high-performance hydration solution designed for maximum thermal efficiency in a compact frame. Featuring a 304 stainless steel interior and a copper lining, it excels at temperature retention, keeping your beverages hot for 10 hours or cold for an impressive 18 hours. The flip lid provides a secure, leak-resistant seal while allowing for easy one-handed operation during a busy commute or workout. Finished with a professional-grade durable powder coating, this tumbler is built to resist wear and tear while maintaining a sleek, sweatproof exterior. Its balanced size and large branding area make it a premier choice for 1-color silk screen, laser engraving, or full-color UV DTF decoration.
