20 Oz. Stainless steel double wall tumbler. Vacuum sealed 18/8 SS liner with copper coating for maximum insulation. Sip top lid with rubber gasket and spill resistant open/close slide, keeps drinks hot for 8 hours and cold for up to 12 hours. Its step down bottom fits nicely in most cup holders. BPA free, meeting all FDA requirements. Hand wash recommended. Add'l imprint options available at 2"Wx2.5"H in laser engrave or as a seamless full wrap at 10.8"Wx2"H in digital FC or laser engrave.