20oz TKWide with Café Cap, Tofu vs Stainless Steel Vacuum Insulated Tumbler Flip Lid: which is safer?

Where these two actually differ

• We flag Powder-coat cap degradation over time, Bacterial biofilm in cap threads and seals and Thermal stress on seals at extreme temperatures on the Klean Kanteen and not on the Mira.
• We flag Polymer lid degradation and bacterial colonization and Microplastics from polymer lid wear on the Mira and not on the Klean Kanteen.
• The Klean Kanteen is Stainless steel bottle, stainless steel cap where the Mira is Stainless steel body, polymer flip lid, which is most of the difference in these two grades.