This Cap Fits:

– Polar Bottle Thermaluxe
– Polar Bottle Ergo

 KEY FEATURES

  1. Sip-through cap allows you to drink directly from the lid
  2. Spill proof
  3. Removable gasket for easy cleaning
  4. Made in USA
  5. Dishwasher safe
  6. Fits all Polar Bottle Ergo® and Thermaluxe® bottles
  7. Phthalate and BPA free.

Personalized Water Bottle

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Frequently Asked Quesetions

The Half-Twist is a sip-through, spill-proof cap. The half twist design allows you to drink directly from the lid, preventing spills and making it simple to use on the go. The design also delivers the ideal flow of water — a perfect sip with each drink.

To use the cap, simply line up the water droplets on the bottle and cap to start the flow of water. To close, twist the cap all the way in the other direction until it is completely sealed. A medical-grade silicone gasket inside the cap prevents spilling and leaking.

The Half-Twist cap fits the stainless steel Thermaluxe® and Polar Bottle Ergo® bottles only.


The Polar Bottle Half-Twist cap is manufactured by our supplier in Longmont, CO. We assemble the cap on to bottles, and ship it from our Boulder, CO headquarters.

Polar Bottle products are made from PP, LDPE, HDPE, and Tritan™ plastics, which are free of harmful chemicals like BPA and Phthalates. To the furthest extent of current scientific knowledge, none of these plastics contain harmful chemicals that may leach into the liquid contained in the bottle. The well-being of our customers is of the highest priority to our company and plastic safety is an issue we take very seriously.

Polar Bottle products have always been BPA and Phthalate Free.


Yes, the Polar Bottle Half-Twist cap is top-rack dishwasher safe and features a removable gasket for easy cleaning.

Simply pull up on gasket to remove. To reinsert, pop the silicone gasket back into the cap. Be sure that it is tucked underneath the bottom threading of the cap. 

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