The vacuum insulation ensures that the temperature of your drink stays cold in all weather conditions or hot until the last sip. Capacity: 591 ml / 20 US fl oz Measures 7.5 inches tall and 3.25 inches wide This two-stage on-the-go beverage handler is the only YETI beverage container equipped with the Rambler StrongHold lid - a leak-proof twist on upgrade equipped with double slider magnetic technology. It adds a strong layer between your free-flowing drink and the outside world in case arm vibrations or road sleepers occur. The vacuum insulation ensures that the temperature of your drink stays cold in all weather conditions or hot until the last sip. YETI products are all made of 18/8 stainless steel, BPA free and dishwasher safe. The durable Duracoat coating ensures that the paint does not peel, crack or peel. Prevents condensation so that your hands always stay nice and dry. Please note: the StrongHold lid is specifically made to fit the Rambler 20oz travel mug (20 oz) and will not fit any other Rambler beverage container models.