Days on the dock are made better with the RamblerÖ 30 oz. Tumbler. ItÆll keep your dinnertime drink cool well past sundown or your coffee nice and hot throughout the morning. The Rambler 30 oz. Tumbler is made of 18/8 kitchen-grade stainless steel, has double-wall vacuum insulation, and No SweatÖ Design. Which means that youÆve got one heavy-duty, over-engineered cup on your hands with the Rambler Tumbler. ItÆs dishwasher safe, BPA-free, and ready for just about anything. Your personal hydration power station Holds 30 oz. of your favorite drink, keeping it cold or hot for longer Stainless steel construction will hold up on the lease, ranch, or worksite Double-wall vacuum insulation keeps cold drinks cold and hot drinks hot 18/8 STAINLESS STEEL: Made with kitchen-grade stainless steel so theyÆre puncture- and rust-resistant. DOUBLE-WALL VACUUM INSULATION: Keeps cold drinks cold and hot drinks hot until the last sip. NO SWEATÖ DESIGN: Keeps fingers dry and unfrostbitten. Size Guide: OUTSIDE 7 7/8ö + 4ö EMPTY WEIGHT 16 oz.