Mushrooms 18 oz Steel Bottle
If you're leaving home at dawn to spend the day making observations in a misty forest or just enjoy taking your coffee with you wherever you go, this Mushrooms Vacuum Flask has got you covered. Let it inspire you to stay out just a little longer to collect that last bit of important data or fuel your next great idea.
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 | 530 mL|
|Material||High-grade stainless steel|
|Origin||Designed in Oregon, Built responsibly overseas|
|Cap Material||High-grade stainless steel, silicone ring|
|Care||Hand wash only|
Flat Rate $9.95
Orders $75+ ship for free
Expedited service available
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.
Returns & Exchanges
within 30 days of purchase
On USA orders over $75
Inclusive Workplace & Eco Friendly Products
Frequently Asked Questions
It's a perfect size and keeps my water cold for a very long period of time!
Better than expected!
Love how this bottle looks and it keeps beverages hot or cold for hours. Functional and gorgeous!
The thermos works well and the pattern is really cute!
I've Started Drinking...
I have always hated water, and this flask has severely improved my hydration. I love how it looks and am compelled to carry it around with me constantly. It keeps ice cubes cool all day, even with the lid off. I just refill with water and the cubes stay nice and chilly throughout the day. I rarely leave the house (quarantine, yay) but when I do, the lid seals nicely and is easy to spin on and off. Haven't done any warm bevs in it but I might have to... Just been so dependent on it being my water source so haven't gone there! The design is exactly as pictured, with little raised/embossed elements and a semi-rough texture that helps the bottle stay easily grabbable/recognizable due to its distinct tactile feeling. LOVE it. Already bought two more for friends and might just have to keep getting more until everyone I know has their own!
The print quality is amazing, it always makes me happy to look at it and feel it. The flask itself is a very good one: it keeps my drinks cold and warm for a couple of hours no problem. The handle is very easy to hold, especially on my walks. I’ve had a minor issue with the lid, where it takes a couple of tries to screw it on straight, but I don’t mind it too much.
These products are all high quality and perfectly scratch that itch for niche and artistic items. I receive constant compliments and the customer service team is incredible and very quick to fix any issues!