Peer Reviews
Spectrum of Light 18 oz Steel Bottle
On a dark night, away from city lights – even with the naked eye – you can see that the stars shine in different colors. Studying the light emitted by each star tells us loads of information about the chemical composition, density, mass, distance away, and how that star is moving. This design celebrates astronomical spectroscopy and learning to understand the secrets of the cosmos.
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 304 stainless steel, Lead-free |
| Origin | Designed in Oregon, Built responsibly overseas |
| Cap Material | High-grade stainless steel, silicone ring |
| Care | Hand wash only |
USA
Flat Rate $8.95
Orders $40+ ship for free
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. If you have any questions about your order, please contact our friendly Customer Service and we'll be glad to help.
We ship from Redmond, Oregon.
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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Shipping is available to most countries. See details at checkout. Shipping FAQ
If you are in Europe please take a look at our EU site for better shipping rates.
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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.
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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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No problem! We offer full and partial refunds and exchanges. Read more here.
