The Purist Insulated Fixy Bottle features an amorphous silicon dioxide coating that's infused into the inner-wall of the bottle. Essentially, this forms a glass-like finish that provides a totally natural, and completely inert, solution to the problem of your drinks staining the bottle or leaving behind any residual aftertaste. This infusion also shields your fresh water from tasting like plastic on very hot days, making it akin to drinking straight from a sparkling clean glass.

The silicon dioxide coating is a mere 20 nanometers thick which, for comparison, is less than 5,000 times thinner than a human hair. Meanwhile, the shape of the bottle feels equally perfect both in the hand and in the cage.

It's fully insulated to get keep your beverages either piping hot or icy cold, and it comes equipped with our Fixy cap, which is the easiest cap to use on the market. Period. No push or pull of the mouthpiece is required to open and close it. Plus, the integrated Heart Valve™ provides incredible flow and a leak-proof design.

• Double-wall construction and proprietary insulating liner provides a 3-Layer radiant barrier, keeping your water colder for 22% longer than other insulated bottles.

• Proprietary materials make the Purist Insulated the most flexible, easy-to-squeeze insulated bottle available.

• Self-sealing Heart Valve™ delivers a high rate of flow with a 100% leak-proof design—even when the valve is open.

• No push or pull is required to open and close the Heart Valve™.

• Easy-to-clean mouthpiece.

• BPA-Free plastic is made from 100% FDA food-grade materials, and it's printed with non-solvent base (UV Cured), CPSC-approved ink and materials.

• BPA-Free plastic is made from 100% FDA food- grade materials, and it's printed with non-solvent base (UV Cured), CPSC-approved ink and materials.