18/8 stainless-steel construction Double-wall vacuum insulation Leakproof flip straw Car cup holder compatible Highlights STAY HYDRATED FOR THE WHOLE DAY: This large tumbler with lid and straw can hold 30 oz of thirst-quenching beverage to power you through your longest days KEEPS COLD FOR A LONG TIME: Constructed with double-wall vacuum insulation and BPA-free 18/8 stainless steel, your drinks will stay nice and chilled for 12 hours or iced for up to 2 days STRAW PERFECTED: Say goodbye to disposable straws that are flimsy and wasteful, the IceFlow flip straw allows effortless sipping and is leakproof when closed, just snap it shut and you are done. MADE TO FIT YOUR LIFE: The folding handle lets you quickly grab and go. Fits comfortably in most car cupholders or on most exercise machines. It's also easy to clean and is dishwasher safe. BUILT FOR LIFE: Lifetime warranty guaranteed