This tumbler keeps your drink just the way you like it—cold or hot—for up to 24 hours, thanks to its vacuum-sealed, double-wall insulation. With a 40 oz capacity, you'll have plenty of liquid on hand, cutting back on the need for refills and reducing your use of single-use plastics. The greatest benefit of using a larger capacity stainless steel tumbler is dodging the microplastics found in plastic bottles.