Whether you’re lucky enough to be out watching the aurora or your roommate just likes to keep the apartment so cold it feels like the arctic, fill this flask up with your favorite hot drink and warm up from the inside. It’ll also keep your ice from melting all day long so your drink is glacier-cold.
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 the vacuum flask 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!
- Capacity: 18oz
- Dimensions: 2.75"D x 8.75"H
- Does NOT come with an infuser. Check out our "Make your own teabags"
Hand Wash (do not wash in the dishwasher)
High-grade 304 stainless steel