Core Sample 18 oz Steel Bottle
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.
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.Â
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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Frequently Asked Questions
Peer Reviews
- Reviews
- Questions
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.
I love it!
I love it! You can feel how nice the quality is and the design is perfect! Would recommend:))
Core Sample Stainless Steel Vacuum Flask
perfect for the paleontology lovers!
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!
United StatesPerfect mug for any geo nerd :)
This mug is AMAZING. My brother (a geologist) is going to LOVE it.
Core Sample Stainless Steel Vacuum Flask
Very well made and packaged nicely. My friend loved this unique tumbler!