The Rambler 30 oz. Tumbler is made of 18/8 kitchen-grade stainless steel, has double-wall vacuum insulation, and No Sweat Design. Double-wall vacuum insulation keeps cold drinks cold and hot drinks hot. Now that the Rambler family is sporting DuraCoat Color, it's pretty good looking to boot, making it a perfect stainless steel drinking vessel. It won't fade, peel, or crack through extended field use, and the DuraCoat Color provides additional grip to the Rambler's exterior.
All the 20oz and 30oz Ramblers come with the YETI MagSlider Lid, the only drink lid that harnesses the power of magnets to keep your sodas or suds on lock.