Firefly Meadow 18 oz Steel Bottle
If you’re the kind of person who could sit and watch fireflies in the meadow for hours, this flask is for you. Whether you’re heading out on a camping trip or researching some of our favorite bioluminescent friends, this flask is here to keep you hydrated, caffeinated, and ready for whatever your adventure brings.
With a textured design for a unique tactile experience, this flask will keep your drink hot or cold until you're ready to enjoy it.
Here's how it works: the space between the inner and outer flask wall is evacuated, creating a vacuum (well, a partial vacuum anyway...). In order for heat transfer to take place from the outside world into your cold drink, or from your hot drink to the outside world, it needs nearby molecules to excite. If there aren't many molecules nearby, as is the case in a vacuum, the heat's energy can't easily be passed along, so your drink stays close to the temperature it was when you put it into the flask for a really long time.
Simply stated, vacuums make great thermal insulation!
|Volume||18 oz | 530 mL|
|Features||Infuser basket compatible|
|Material||High-grade stainless steel|
|Origin||Designed in Oregon, Built responsibly overseas|
|Cap Material||High-grade stainless steel, silicone ring|
|Care||Hand wash only|
Flat Rate $7.95
Orders $40+ ship for free
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Returns & Exchanges
within 30 days of purchase
On USA orders over $40
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Frequently Asked Questions