Neurons Stainless Steel Vacuum Flask

Keep your neurons alert all day long, whether you're running around the

neurology department or studying for exams with this stainless steel vacuum

flask.

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 the right temperature. The BPA-free flip cap seals

tightly, so it won't leak all over your bag, and you don't have to take the lid

off in order to enjoy your drink.

Built with superior grade stainless steel, these double-walled vacuum flasks

use science to keep your drink hot – or cold – for hours!

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 insulation!

* Size: 18 ounces

* Width: 2.75"

* Height: 8.75"

* Opening: Wide Mouth

* Material: High-grade stainless steel

* Cap Material: BPA-Free Plastic

* Care: Hand Wash (do not wash in dishwasher)