Vacuum seal Technology - with maximum temperature retention, foods stay hot for up to 9 hours and cold for up to 18 hours. Exterior stays cool to the touch with hot contents, and sweat-proof with cold Travel easy - keep hot food hot and cold food cold, no microwave or fridge necessary, so take it to go. For work, school, hiking, or a beach day, We've got you covered Durable materials - the stainless steel jar combined with the airtight, leak-proof lid makes this the ideal container to throw into a bag or backpack without having to worry about spills or messes Designed FOR practicality - the extra-wide mouth opening, twist-off lid, and anti-scratch stainless steel make this container easy to fill, pour, and clean Care Instructions - top rack dishwasher safe, hand wash recommended