This travel tumbler is made of stainless steel and is vacuum-insulated to keep your drink hot or cold for longer. It is durable and perfect for use while traveling, at work, or while exploring nature. The tumbler has a capacity of 20oz (0.59 l) and features rounded corners. The clear push-on lid has a rubber gasket for a secure fit, and the tumbler has a glossy finish. The lid does not have a cap.