With the Rambler 20 oz. Tumbler your beverages will stay ice cold or piping hot longer. We over-engineered these double-wall vacuum insulated tumblers with an 18/8 stainless steel body which means your drink still keeps its temperature no matter how much of a beating this cup takes. Our Ramblers are BPA-free (obviously) have a No Sweat Design to make sure your hands stay dry and are dishwasher-safe. They come standard with our YETI MagSlider Lid the only drink lid that harnesses the power of magnets to keep your sodas or suds on lock. All to say these Ramblers Tumblers will keep your drink cold (or hot) until the very last sip.