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A bit smaller, but just as strong. The YETI Rambler 20 oz. Tumbler is equipped with a Double-Wall Vacuum Insulation, to ensure your morning coffee stays hot and that evening beer stays cold to the last gulp. With a shatter-resistant Magslider Lid, it’s never been easier to get a quick sip while on the move. Staying true to the YETI brand, the YETI Rambler 20 oz. Tumbler is exceptionally constructed. Crafted out of kitchen-grade 18/8 stainless steel, the YETI Rambler 20 oz. Tumbler is puncture and rust resistant for those accidental drops. Plus, the YETI Rambler 20 oz. Tumbler is dishwasher safe, for your convenience.