Whether you are going to work, on an outdoor adventure, or hanging with friends, the Rover 30 oz. tumbler is the perfect way to keep your drink cold. The double-walled vacuum insulation keeps your beverage the perfect temperature, with no condensation. It is built with 18/8 kitchen grade stainless steel making it durable and it will not leave a metal flavor. With a crystal clear lid, rubber gasket and rubber stopper your beverage will maintain constant temperature longer, making it the ultimate drinking experience.