Stay Refreshed Anywhere All Day
Drinks stay perfectly hot or cold for hours. Handy flip-top straw lets you sip quickly without hassle. Cleaning is easy, and it fits neatly in bags. Choose reliable hydration for every journey, every time.
Effortless Hydration
One push opens the lid for instant sipping ease. Leakproof cap and safety lock prevent spills in your bag.
Long-Lasting Temperature
Double-walled insulation keeps drinks hot or cold all day. Beverages taste fresh and enjoyable from morning to night.
Safe and Sustainable
The Threo flask is made of food-safe steel, free of BPA. Reusable design helps reduce plastic waste and supports the environment.
Size Guide
| SIZE | VOLUME | |
|---|---|---|
| ml | oz | |
| S | 800 | 27 |
| M | 1000 | 33.8 |
| L | 1200 | 40.6 |
| XL | 1500 | 50.7 |
Jake M.
I like drinking from the straw right after basketball practice. Water is still cold, even when I left it in my gym bag all day.
Anna D.
I take this flask everywhere now—school, dance class, you name it. It keeps my water icy cold until evening, and the straw is super handy.
Chris S.
Drinks stay cold way longer than my old bottle. I bring it on hikes, and there’s never a leak, even in my stuffed bag.
Sam T.
My tea actually stays hot all morning at work! The button to open is easy, and I never worry about spills in my backpack anymore.
Rachel L.
Cleaning this bottle is so simple. I love that it fits in my cup holder and never leaks. Drinks always taste fresh, too.
Leah G.
Easy to pop open with one hand, perfect when cycling. Hot chocolate lasts warm till the end of the trip. I like the size, too.
Ellie P.
Having the cap lock means my smoothie doesn’t spill in my tote. Super easy to open, and I use it every single day now!
Mason B.
Love the strong steel design—seems really durable. I dropped mine and it still looks new. No weird tastes, just good clean water.
Ethan H.
Steel bottle feels sturdy and always ready.
Tom F.
Keeps my drinks hot or cold all day!