The 36 oz. YETI® RamblerTM is the perfect size for excursions that last a little longer than expected. Double-wall vacuum insulation keeps your coffee piping hot throughout the day, and your water refreshingly cold until the very last drop. Tough, 18/8 stainless steel construction is puncture- and rust-resistant, so it'll withstand even the harshest conditions. Choose from stainless, or opt for a more personalized DuraCoatTM color that won't chip off.