Camp Mug Stainless Steel 16oz by Stanley features double wall insulation keeps drinks hot for 1 hour, cold for 1.5 hours, and iced for 7.5 hours. 18/8 stainless construction. Won't rust and is naturally BPA-free. Leak resistant flip lid. Dishwasher safe. Item Number: STA01701 Weight: 0.8lbs Country of Origin: China