The durable, over-engineered, double-wall vacuum insulated YETI Rambler 30 oz. Tumbler keeps your cold colder and your hot hotter, for longer. The construction and 18/8 stainless steel body means your beverage keeps it’s temperature and can take a beating. YETI Ramblers are BPA-free, have a No Sweat Design to make sure your hands stay dry, and are dishwasher safe. The MagSlider lid harnesses the power of magnets to keep your drink on lock.