Practical and and only requires a quick rinse after each use. This model is made out of stainless steel. Stainless steel is durable and can be washed in the dishwasher. Keeps the temperature up to 6 hours for hot drinks and up to 12 hours for cool ones. It has 100% protection against spillage. Enjoy the peace of mind of a sealed design that keeps every drop of your favorite drink where it belongs, even with soda.