KEEP DRINKS HOT FOR 40 HOURS: The Large Stanley Classic vacuum flask features superior insulation that keeps drinks hot for 40 hours or cold for 35 hours. Add ice to keep it cold for up to 6 days. Available in sizes from 0.47L to 2.3L. SUSTAINABILITY AT STANLEY: We believe in creating a more sustainable world through our Built For Life promise and century-old brand. Stanley looks to eliminate the need for single-use disposables and increase recycled content materials every year. MULTI-PURPOSE LEAK PROOF LID: The Stanley flask is designed with a leak-resistant lid, so you can put it in your backpack without worrying about any spills. The wide mouth of the bottle helps with easy pouring into the lid that doubles as a cup DISHWASHER SAFE: This insulated bottle designed to clean easily. Every piece of this stainless steel vacuum bottle is dishwasher safe. BUILT FOR LIFE: 'Built for Life' has been the Stanley promise since 1913, manufacturing rugged, high-performance products that last a lifetime.