Meet the iconic Stanley Quencher with the leakproof ProTour Flip Straw lid. The 30-ounce tumbler simplifies hydration—flip the straw to sip, then snap it shut. It features double-wall vacuum insulation to keep your water ice-cold for hours. Designed with a comfort-grip handle to fit perfectly in your car’s cup holder  30 oz tumbler Double-wall vacuum insulation Keeps drinks cold for 9 hours Drinks stay iced for 40 hours Leakproof ProTour Flip Straw Lid Removable spout Replaceable seal Textured comfort-grip handle Fits most car cupholders  BPA-free Dishwasher safe Powder coat finish 18/8 stainless steel