Descending Regions Stainless Steel Vacuum Flask

3 reviews
$ 39.95 USD

Get lost beneath the waves even when life keeps you at your desk. When you can escape to the shore, take this flask on beachcombing adventures, diving excursions, and marine biology research trips. When the sound of waves on sand is a distant memory, let this bottle transport you to sunny shorelines with cool clear waters.

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.

Volume 18 oz / 500 mL
Width 2.75"
Height 8.75"
Opening Wide mouth
Material High-grade stainless steel
Cap Material High-grade stainless steel, silicone ring
Care Hand wash (do not wash in dishwasher)


Fill it with your favorite mulled hot cider or cold brew, and even if you don't get around to drinking it for hours, you can expect to find your beverage ready and waiting for you at just the right temperature. The metal cap seals tightly, so it won't leak all over your bag. 

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!


Flat Rate $9.95
Orders $75+ ship for free
Expedited service available


Shipping is available to most countries. See details at checkout.

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Trace C.
United States United States

Birthday gift

My daughter wanted for her birthday! So I got her 2! Couldn’t decide which one she’d like best. So got her both! She’s loving it!

Cognitive Surplus Descending Regions Stainless Steel Vacuum Flask Review
Suzanne C.
United States United States


Well made, beautiful!

Mary M.
United States United States

Beautiful and Functional

It was a gift for my daughter who used it right away after receiving it. She is an artist and loved the design. She is also a mother who found it very handy to use.

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