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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 |
| Size | US | UK | EU | Foot length | |
|---|---|---|---|---|---|
| cm | inch | ||||
| 35 | 5.5 | 4 | 35 | 23 | 9.06 |
| 36 | 6 | 4.5 | 36.5 | 23.5 | 9.25 |
| 37 | 6.5 | 5 | 37 | 24 | 9.45 |
| 38 | 7 | 5.5 | 38 | 24.5 | 9.84 |
| 39 | 7.5 | 6.5 | 38.5 | 25 | 10.04 |
| 40 | 8 | 7 | 39 | 25.5 | 10.04 |
| 41 | 8.5 | 7.5 | 41 | 26 | 10.24 |
| 42 | 9 | 8 | 42 | 26.5 | 10.43 |
| 43 | 9.5 | 9.5 | 43 | 27 | 10.86 |
| 44 | 10 | 10 | 44 | 28 | 11.22 |
4.67
12 reviews
95%
Of respondents would recommend this to a friend
5 Stars
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M***B (verified buyer)
New Zealand
Love the strong steel design—seems really durable. I dropped mine and it still looks new. No weird tastes, just good clean water.
E***P (verified buyer)
New Zealand
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!
V***W (verified buyer)
New Zealand
Straw is great and easy to clean.
L***G (verified buyer)
New Zealand
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.
R***L (verified buyer)
New Zealand
Cleaning this bottle is so simple. I love that it fits in my cup holder and never leaks. Drinks always taste fresh, too.
T***F (verified buyer)
New Zealand
Keeps my drinks hot or cold all day!
S***T (verified buyer)
New Zealand
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.
C***S (verified buyer)
New Zealand
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.
A***D (verified buyer)
New Zealand
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.
E***H (verified buyer)
New Zealand
Steel bottle feels sturdy and always ready.