Is there really anything quite as cool as bioluminescence? Get lost in the eerie glow of these mushrooms while you sip your favorite drink. Whether it’s filled with mushroom coffee or kombucha, let this vacuum bottle inspire mycological thoughts and a sense of wonder. BPA-free. Hand wash only.
The science of how it works
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.
- Volume: 18 oz
- Height: 8.75"
- Width: 2.75"
- Opening: Wide mouth
- Material: High-grade stainless steel
- Cap Material: High-grade stainless steel, silicone ring
- Care: Hand wash only
- Features: Infuser basket compatible
