Hydration Guide
18/8 vs 316 Stainless Steel: Does Your Tumbler's Steel Grade Matter?
What 18/8, 304, and 316 mean on a tumbler, where 316 actually helps, and why the vacuum, not the steel grade, keeps drinks cold.
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What 18/8, 304, and 316 mean on a tumbler, where 316 actually helps, and why the vacuum, not the steel grade, keeps drinks cold.
*Cold retention varies with bottle size, lid, amount of ice, outside temperature, and how often the bottle is opened.