Placeholder Core Sample Stainless Steel Travel Mug | Cognitive Surplus

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Core Sample 18 oz Steel Bottle

$ 39.95
18 reviews
Item is in stock Only 0 left in stock Item is out of stock Item is unavailable
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Perfect for hot days on dig sites, this Core Sample flask will make sure you've got ice cold water all day long. Take it with you next time you go fossil hunting or toss it in your bag and alight for the lab to analyze your most recent data set.

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.


BPA-free
Hand-wash only
Carbon Neutral Shipping & Operations
Compostable Packaging

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

International

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

If you're shipping to Europe, please check out our EU website for lower shipping rates and quicker delivery times.

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within 30 days of purchase

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On USA orders over $75

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Frequently Asked Questions

Peer Reviews

Customer Reviews
5.0 Based on 18 Reviews
5 ★
100% 
18
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Filter Reviews:
A Cognitive Surplus Customer
KK
08/14/2023
Kristýna K.
United States United States

great

I have already received so many compliments, it definitely attacts people :) and it is very comfortable to drink from, the lid is easy to open and close

RM
07/22/2023
Roman M.
United States United States

Great Product

I love the design, it's just perfect!

I
03/30/2023
Immy
United States United States

Fantastic Water Bottle

Got this for my boyfriend for his birthday, it's awesome! Super well made and insulated, definitely would recommend to anyone interested

MB
01/13/2023
Mary B.
United States United States

He LOVED it!

I bought this for my adult nephew for Christmas - he absolutely loved it! He kept picking it up after unwrapping other Christmas presents to study it. Perfect for your earth scientists

KB
05/26/2022
Kathy B.
United States United States

Core Sample Stainless Steel Vacuum Flask

LOVE it!! It is so awesome and keeps my drinks both hot and cold for a very long time.

C
02/10/2022
Cloud

BR
01/24/2022
Becka R.

I love it!

I love it! You can feel how nice the quality is and the design is perfect! Would recommend:))

A
01/13/2022
Angela

Core Sample Stainless Steel Vacuum Flask

perfect for the paleontology lovers!

S
01/10/2022
Susi

TF
12/26/2021
Taylor F.

Looks incredible and is functional!

Looks incredible and is functional! I purchased this as a gift for a geologist and she was enamored. Can't recommend enough!

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