Lighten Up
Rugged rocks and long trails are no match for this shatterproof Tritan bottle! This lightweight and leak-proof bottle holds 40oz of adventure fuel to keep you hydrated without weighing you down.
TheJourney
...began in 2012 when we built a bottle that inspired adventurers to fill their flask, feel their best, and get going. We innovated a lid system to keep the cold in longer, make ice load easy, and never leak. We designed a satisfying hydration experience—one that gave a sustainable nod to the planet with every sip.
Finally, a bottle to love.
ADVENTURE AWAITS
To inspire, accompany and elevate life's adventures, one sustainable step at a time. We are there to explore all of them with you, wherever life takes you. Fill your ThermoFlask, feel your best, and get going.
Thoughtful Technology
Our intelligent Temp-Lock™ technology is engineered to lock in the temperature. It will keep the perfect temperature, just as you want. That’s how we truly elevate your life’s adventures: cold or hot, hour after hour, step after step.
OUR PART
By replacing single-use plastics with our sustainable ThermoFlask gear, you are consciously making a positive impact and joining the growing movement of eco-responsible adventurers.
Perfect for school and sports.
AGmomof4
I use these water bottles everyday!
Shelby M.
Keeps my kids water cold all day.
Emily J.
Really great value and easy to clean.
Dillon J.
I love that it does not leak all over their backpacks.
Beach365
Out in the sun at 90 degrees for over 5 hours, my water was STILL COLD!
joyssiiaann
You can customize which lid you prefer.
People Magazine
They are a great size, plus a great value.
Jeanette M
Perfect for school and sports.
AGmomof4
I use these water bottles everyday!
Shelby M.
Keeps my kids water cold all day.
Emily J.
Really great value and easy to clean.
Dillon J.
I love that it does not leak all over their backpacks.
Beach365
Out in the sun at 90 degrees for over 5 hours, my water was STILL COLD!
joyssiiaann
You can customize which lid you prefer.
People Magazine
They are a great size, plus a great value.
Jeanette M
Blog
Which ThermoFlask Lid is Best For You?Design your favorite hydration experience with 6 of the Best Lids Ever™: Straw or Spout with 3 handle styles: swivel, wide swivel, and fixed loop.
Blog
Celebration Drinkware for Backyard AdventurersYou’re going to love our new Celebration tumblers! Courageously formal, unabashedly unbreakable, and in one bespoke color that matches every outdoor atmosphere, they’re a gorgeous addition to your backyard drinkware—the perfect accompaniment to any outdoor gathering.
Blog
How to Keep Your ThermoFlask CleanHow to keep your ThermoFlask bottle, lid, and o-rings clean.