Peer Reviews
Star Chart 18 oz Steel Bottle
$ 40.00
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Whether you're heading out to watch the Leonids on a chilly November night, or just enjoy taking your coffee with you wherever you go, this Star Chart Vacuum Flask has got you covered. Let it inspire you to stay out just a little longer to catch that one last shooting star or fuel your next great hypothesis.
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.
Infuser Basket Compatible
BPA-free
Hand-wash only
Carbon Neutral Shipping & Operations
Compostable Packaging
Buy It With
$ 8.00
Buy It With
Buy It With
$ 13.00
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 |
| Width | 2.75" |
| Height | 8.75" |
| Opening | Wide mouth |
| 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 |
USA
Flat Rate $7.95
Orders $40+ ship for free
Expedited service available
International
Shipping is available to most countries. See details at checkout.
If you're shipping to Europe, Asia, the Middle East, or Oceania, please check out our European website for lower shipping rates and quicker delivery times.
Frequently Asked Questions
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When your order arrives, open it up and take a look. If anything isn't as expected, got damaged in transit, or doesn't fit properly, let us know and we'll make it right.
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Shipping is available to most countries. Simply select your country at checkout.
Shipping FAQIf you're shipping to Europe, please check out our EU website for lower shipping rates and quicker delivery times.
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We do our best to process and pack up orders within 1-2 business days. You will know your order has shipped when you receive tracking
information. Typically orders arrive within 1-8 days (depending on where you live) expedited shipping options are available at checkout. -
No problem! We offer full and partial refunds and exchanges. Read more here.
Further Research
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