ThermoFlask 40oz Stainless Steel Water Bottle 2-Pack Only $19.99 at Costco

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Thermosflask Water Bottles

Stay hydrated with a deal from Costco!

Heading to Costco soon? Through May 15th, you can snag this ThermoFlask 40oz Stainless Steel Insulated Water Bottle 2-Pack for only $19.99 after the $6 instant savings!

Note if you order these online they are priced at $27.99 shipped after the automatic $6 instant savings!

Not a Costco member yet? Consider snagging this sweet membership deal to score a $10-$20 Costco Shop Card!

thermoflask bottles at costco

These stainless steel insulated water bottles keep you hydrated through any workout or adventure – and they fit in most cup holders! The double-wall vacuum insulation keeps the bottle sweat-free and ice-cold for up to 24 hours.

The dual lid bundle combines our leak-proof spout lid for easy, controlled drinking and the folding straw lid for quick one-handed sipping. You can even mix and match the lids to best fit any activity!

Still not sure? These reviews will speak for themselves!

These are the best for getting a minimum of 80 oz/day! I end up refilling multiple times because the drinking spouts make it so easy to drink lots of water throughout the day. The carrying handle is perfect and ergonomic. Love these water bottles!


My husband and I love the Thermoflask brand, and they now have straws! That made me love the brand even more! The handle is bigger now which is so convenient since I am always holding a lot of things coming in and out of my car. I love my water ice cold and this thermal keeps it cold for long periods of time. Very happy with my purchase!

We tested water bottles… click HERE to find out which one won!

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Comments 1

  1. Jen P

    These bottles are huge! I got a set for my kids for Easter and they love them! I may go buy another set for myself and the husband, can’t beat that price!

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