Gateway to the Stars 18 oz Steel Bottle
Perfect for keeping warm while you admire the night sky or for encouraging astral reveries while you wait for the sun to set, this Gateway to the Stars bottle will keep your drink hot (or cold) all day (or all night) long. Even on nights when your problem sets or data analysis keep you from finding dark skies filled with twinkling stars, this bottle is ready to be your companion. Fill it with your favorite brew and you’re ready for anything.
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
Expedited service available
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.
Returns & Exchanges
within 30 days of purchase
On USA orders over $40
Inclusive Workplace & Eco Friendly Products
Frequently Asked Questions
Loving the cognitive surplus steel bottles! They're incredibly easy to clean, which is a boon in a humid climate. I never realized how much of a difference a small handle could make – it's easy to attach to backpacks or hold with just a few fingers when your hands are full. The design, however, isn't as noticeable as I'd expected. I was hoping for a bit more contrast and a slightly lighter look, but overall, it's a great, sleek design.