Birds 500 mL Steel Bottle
Perfect for long days taking inventory of the museum's taxidermied bird collection or patient vigils waiting for a glimpse of an elusive specimen, this Birds Vacuum Flask will have your drink at just the right temperature whenever you're ready for it. Particularly if you're the type to get lost in your work for hours, it's nice to know that your tea won't have gone cold while you were having a moment of genius.
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 / 500 mL |
| Width | 2.75" |
| Height | 8.75" |
| Opening | Wide mouth |
| Material | High-grade stainless steel + BPA-Free plastic threads (threads not touch the drink) |
| 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.
Shipping is available to Europe & the UK!
Within the EU
Orders €75+ ship for free!
Flat Rate shipping €5.95 on orders less than €75
To the UK + EFTA + Rest of Europe
Orders €75+ ship for free!
Flat Rate shipping €9.95 on orders less than €75
VAT will be due upon delivery
* Delivery to zip codes that UPS considers to be "Remote" are charged the UPS Extended Service area fee of €30 in addition to the standard shipping rates.
Orders are processed within 1-3 days (Monday-Friday)
Shipping by GLS & UPS 1-5 days
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Frequently Asked Questions
Bird design Thermos flask
An absolutely beautiful design, I’m just delighted with it,