Contigo AUTOSEAL West Loop Stainless Steel 20-Ounce Travel Mug 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 6-hour and cold for 18-hour Hand washing recommended; lid is dishwasher safe Fits most standard car cup holders Made from BPA Free material