Contigo AUTOSEAL West Loop Stainless Steel Travel Mug, Vacuum Insulated, 16oz Berry Patented autoseal lid is 100-percent leak proof and spill proof and offers convenient one handed drinking Vacuum insulated double wall stainless steel keeps beverages hot for 4-hour and cold for 12-hour Lid is top rack dishwasher safe while body is hand wash using non abrasive cleansers to preserve the painted finish Fits most standard car cup holders Bpa free