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. BPA free, meeting all FDA requirements. Hand wash recommended. Additional laser engrave and digital full color imprint options available at 2.5"Wx2.5"H or as a seamless full wrap at 10.5"Wx2.5"H.