Stanley Quencher ProTour 40oz Flip-Straw Tumbler

The Stanley Quencher ProTour is a 40oz double-wall vacuum-insulated stainless-steel tumbler with a flip-straw lid and comfort-grip handle. Built from 18/8 recycled stainless steel, it keeps drinks ice-cold for hours thanks to proven vacuum insulation. The leakproof flip-straw lid snaps shut to prevent spills, and the narrow base fits most car cup holders. It's dishwasher-safe, BPA-free, and backed by a lifetime warranty. The soft-texture handle and two-tone lid design appeal to everyday commuters, gym-goers, and travelers. At $45, it carries a premium price tag justified by Stanley's category-defining reputation and proven longevity, though the open-straw design carries a small leak risk if the lid isn't fully snapped.