Star Chart 18 oz Steel Bottle
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.
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|
Returns & Exchanges
within 30 days of purchase
On USA orders over $75
Inclusive Workplace & Eco Friendly Products
Frequently Asked Questions
Unique water bottle
Works very well, left in the car for 9 hours on a very hot day, the bottle was almost to hot to touch on the outside but the water still had ice floating in it!
We purchased three water bottles for gifts. All were well received. Love the patterns, top, and function.
I am so impressed with this bottle. It has a great secure handle, and the design is beautiful. I am so happy with my product, I feel such joy using it! I fully intend to purchase from here again! Larger sizes would be a great product too!
Great birthday present
My daughter loves this!!!
Very good quality.
Very good quality. It really keeps your beverages cool for quite a long time. Will be back to buy more soon.
My friend loved it!
My friend loved it! The item reached earlier than expected too! Thank you!
It's very sturdy and hasn't dented even when I dropped it. The design is lovely!
Star Chart Stainless Steel Vacuum Flask
Absolutely beautiful bottle! I've purchased items from this shop many times and they've always been very beautiful and high quality.
My friend loved this flask…it’s the second time I’ve sent one as a birthday present…they are a hit!
I got this water bottle for myself a few months ago, and it has been AMAZING soon far! It keeps my water cold, it's easy to hand wash, and the texture acts as a satisfying fidget for my hands. I ended up buying two more as birthday gifts to family members. 10/10 recommend. :)