New 2017 Yeti DuraCoat Rambler 30 oz Tiffany Blue Stainless Rambler™ 30 oz. Tumbler. It’ll keep your dinnertime drink cool well past sundown or your coffee piping hot. The Rambler 30 oz. Tumbler is made of 18/8 kitchen-grade stainless steel, has double-wall vacuum insulation, and No sweat design. Thicker more durable paint. Not glossy but substantially thicker. Holds 30 oz. of your favorite drink Double-wall vacuum insulation keeps cold drinks cold and hot drinks hot. No lowball offers.