The Contigo Thermalock is a vacuum-insulated stainless steel water bottle that, with its stylish metallic color, could easily belong in an art gallery. But this thermos bottle offers more than just good looks. The Thermalock technology keeps drinks cold for up to 24 hours or hot for up to 10 hours. When the lid is closed, the bottle is 100% leak-proof. The drinking opening can be removed for easy cleaning. With the carry handle attached to the bottle, you can take it anywhere. It even fits in most car cup holders. At the end of the day, don't forget to hand wash your bottle to ensure the best drinking experience.