Which Water Bottle Keeps Water Cold The Longest?

The one with a rubberized lining.

The simplest way to keep your water cold is to buy a bottle that has an insulated, rubberized lining. The lining insulates heat from getting into the bottle and turning the inside into a hot greenhouse. Bottles without insulation or that do not have a rubberized lining will cause water inside to warm up–quickly–so drink it before it goes flat too! Check out ZiiP Eco-Friendly Stainless Steel Water Bottle which has both! 🙂

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