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  • Stainless-steel interior will not retain flavors or smells
  • Rustproof exterior withstands weather and wear
  • Wide-mouth opening is easy to sip and pour from
  • Slim profile slides into a pocket
  • Base can be engraved to add a few special words (engraving not available through REI)


View all Stanley Flasks

REI membership


Best Use Backpacking
Liquid Capacity (L) 0.24 liter
Liquid Capacity (fl. oz.) 8 fluid ounces
Dimensions 6.5 x 3 x 1.25 inches
Water Bottle Material Stainless Steel
Material(s) Stainless steel
BPA Free Yes
Bottle Opening Narrow
Water Bottle Cap Type Screw Cap
Weight 5.3 ounces
Rated 5 out of 5 by from Another excellent quality Classic Flask. In wine there is wisdom, In beer there is Freedom, In water there is bacteria. -Benjamin Franklin This flask is over a year old and in great shape. Plastic flasks are light weight and are prone to break. TIP: With any container that holds liquid, the seals must be maintained or occasionally replaced (see picture). The manufacturer sells replacement seals. Any liquids stored in steel flasks over time will take on a metallic taste due to the iron elements starting to oxidize. (even though it is stainless steel) CUSTOM NOTE: I covered my flask with a leather design.
Date published: 2014-05-03
Rated 5 out of 5 by from Gasket sucks. doesn't leak without it. I own 3 Like the title says I own three of these flasks, green, blue, and black. Yes the gasket sucks but I just take them out. I carry a backpack with me every day filled with random man things including one of these flasks and I haven't had any issues with a leaking flask, even with the gasket removed. I'm actually about to order two more of these flasks, a red one for myself and another one for my buddies engagement party. Buy one and remove the gasket, you won't be dissapointed. My favorite part is that these flasks hold 8oz, most flasks hold 6oz.
Date published: 2014-08-01
Rated 5 out of 5 by from Love the attached cap and wide mouth! I bought this for myself, and it worked so well traveling in my suitcase (no leaks!) that I ordered 2 more for gifts. Recipients loved them too!
Date published: 2015-01-02
Rated 5 out of 5 by from No funnel required Stainless steel , no funnel required ,and sturdy ... I have owned 1 since 2012 . I recommend !
Date published: 2016-01-30
Rated 5 out of 5 by from It's a Stanley As the title says..."It's a Stanley". Though I have had the flask but a short time I know it will be used alot. I saw this at the Bellingham REI store and was suprised that I recieved one for Christmas. Its made well, sturdy and just right. The Stanly names goes along way. I just had a problem with a Stanley product that had been well used. After contacting them a new vacume bottle was shipped free of any charge. Thats service. So yes great products.
Date published: 2013-01-24
Rated 4 out of 5 by from Just what I was looking for. I know two other people complained about leakage, but I have not experienced any such thing. For starters I don't trust any liquid-holding container enough to pack it upside down or sideways. I have shopped around and considered the titanium flasks by Snow Peak. I have decided that they just weren't worth the money ([$]?). I did list that this flask is hard to clean, but what flask isn't? It is also a little heavy for its size, but the trade-off is durability and a large capacity for a flask.
Date published: 2011-12-22
Rated 5 out of 5 by from heavy duty great flask for hiking and camping. I havent had and problems with it leaking. the inside is all stainless steel.
Date published: 2013-01-18
Rated 1 out of 5 by from Nice design but a leaky seal This was given as a gift to me and my best man on my wedding day. I've had a Stanley thermos for years that I love, so my wife thought this would have the same quality. Unfortunately, on the first use I opened my bag to find that the seal leaked and everything now smelled like the contents of the flask. Very cool design, loved the old school green color, but it just doesn't work as intended.
Date published: 2012-09-23
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Is the product BPA free?

Asked by: dmc27
Thanks for asking. Yes, it is BPA free. All Stanley products are BPA free, and stainless steel is naturally BPA free.
Answered by: Stanley-PMI
Date published: 2015-09-20
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