With the YETI Rambler 20oz Tumbler, your beverages will stay ice cold or piping hot longer. YETI 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. 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 the YETI MagSlider Lid, which harnesses the power of magnets to keep your sodas or suds on lock.