Rivers & Mountains 18 oz Steel Bottle
Hike all your local peaks and then navigate all the waterways you can find in your trusty kayak with this Rivers & Mountains flask to keep your tea hot and your water cold. Nothing's worse than summiting a mountain only to find your coffee's gone cold, and this flask is here to make sure that doesn't happen. Featuring an early illustration of great rivers and prominent mountains, let it inspire you to explore just a little bit further.
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 $7.95
Orders $40+ ship for free
Expedited service available
Shipping is available to most countries. See details at checkout.
If you're shipping to Europe, Asia, the Middle East, or Oceania, please check out our European website for lower shipping rates and quicker delivery times.
Returns & Exchanges
within 30 days of purchase
On USA orders over $40
Inclusive Workplace & Eco Friendly Products
Frequently Asked Questions
This bottle is beautiful and excellent quality. The picture is textured and that makes it a pleasure for me to use and carry. Would definitely buy again!
Handsome design, exceptional quality, perfectly functional. These thermos (flasks/bottles) keep cold beverages — cold and hot beverages — hot. Easy to carry, drink from and clean. Highly recommended.
Amazing product! I use this everyday and I love every time I get to drink out of it. Super good quality and looks awesome.
My sister is a riparian ecologist. This was the perfect gift for her, and she loves it! Very sturdy and well-made. It doesn't leak like some vacuum flasks.