Keith Titanium Ti9306 Pocket Flask with Funnel - 4.0 fl oz ●●●●●●● Keith's 18th Anniversary: Exclusive Price!

Edit: Feb 2023: Going on 3+ years now and the flask has held up like a champ from multiple canyoneering and camping endeavors. I've bought a few more for friends/family and none of them have had the weird thread problems that the second one I bought (and returned/replaced) did. I actually bought the larger version of this flask from the same vendor--same quality, just a bit bigger. Overall, still pretty happy with it!Overall seems really fantastic--volume is definitely off, but the exterior dimensions are all spot on (see attached images). 62.5g empty, 219g full of water, water dumped into measuring cup measures 156g. Seams are super clean both inside and out (see interior pic). And they thoughtfully dimpled the 4 corners at the bottom so it will stand upright whether empty or full (again, see pic).Not sure about the other reviewers--while it is certainly very light, it doesn't feel flimsy or "soda-can-like" at all--there is only a tiny amount of flex when pressing moderately in the middle. And it takes two full rotations of the cap from tight-to-off (not sure what the reviewer mentioning "one-half turn" is talking about; maybe he meant one-and-a-half?) The top of the cap has a clear liner to keep it airtight (probably silicone? didn't discolor or lose flex when boiled in water for a few minutes). Also, I haven't noticed any staining on the outside--of course, skin oils leave a residue, but it washes right off with any kind of soap. Definitely wouldn't put it through the dishwasher, though--those detergents are not great for raw metals, and you wouldn't really get any water flow inside anyway.The dimensions listed are accurate, except that it does bow out in the middle sides about 2mm (see pic; instead of stated 20mm depth, it's about 22mm in the center). And there weren't listed dimensions for the spout--but the cap is 14.5mm OD/12mm ID, and the spout is 11.6mm OD/10mm ID. It's 8.7mm from top of spout to body of flask. Don't have a thread gauge so I can't tell you the pitch of the threads, but they look smooth and clean.Funnel doesn't have a vent crease, so it's pretty slow to fill unless you hold it up a little to give the air a way to escape. Also, the funnel is small enough that you'll probably need to decant from whatever larger storage bottle you've got into something smaller like a measuring cup to be able to use the funnel without spillage. Titanium doesn't leave residue and is non-reactive. See picture of cask strength left in the flask for a week with no discoloration or flavor change.Overall seems like a pretty skookum flask. If it leaks or gives me trouble, I'll update this review.Edit: Bought a second one for a buddy; the lid didn't thread onto the flask very well at all. Returned/exchanged--replacement is as smooth as mine. QC needs a little work, I guess.

a reasonable priced flask made of real grade 1 titanium. after a long long search for the perfect flask and finding nothing but stainless steel garbage, i decided to try this one. it passed all my tests: leakproof, ultralight for backpacking, made of grade 1 titanium (other grades have less purity), and the welds have been cleaned internally.in my research, a staggering amount of flasks sold are stainless and have dirty welds that have not been cleaned. these leach heavy metals in your liquors. Leaching ruins your liquor within 12 hours and can make you very sick. 18/6 stainless steel when welded has alloys in the weld that are not food safe. only 316/318 stainless is food safe, and 99% flasks are not made with that high grade of stainless. that being said, the next commercially sold metal flask type I found was titanium. there's maybe 4-5 manufacturers that use grade 1 Ti currently.capacity is a bit off. i was able to fit 150-160mL in the flask. not really a problem.

I'm weird... I use this for jogging. I bought a running vest and this flask perfectly fits inside the pocket. I drink water but people judge me like I'm drinking in public. I act like drunken master and they scatter in awkwardness.The Good:- Ultra light. The reason why I bought it.- Sturdy. Try bending this bad boy.- Thin. Easily fits in your pocket.- Tasteless when drinking waterThe Bad:- It stains very easily and it's difficult to remove it. Touching with oily fingers may be the culprit. (see the pictures)- Weird finger sensation when touching it, like I'm about to scratch a blackboard- Slow for the liquid to come out. I wish the mouth was bigger.Verdict:Best titanium flask for the price. Great craftsmanship. I would have preferred it to be covered with a thin layer of other type of material to prevent any stains. Overall, my fluffy plump cat approves this product, and so do I.

Nice little flask with funnel. Just the right size to fit in pocket. Comes with a funnel. Made of 100% titanium. Seal is good at the mouth, does not leak.

I love this flask. It is light, it looks cool and above all it works as it should. Will not have to worry about rust and it will make a great surface for my laser engraver.

I was looking for a smaller Ti flask than my Snowpeak ~5oz and thought this was it. However, it actually has more capacity and is way over the stated 100ml capacity at ~160mls, and so for me, is redundant. Threads are also extremely shallow, with ~one half turn between tight and off. All that said it is inexpensive for Ti flask, does not leak, and feels of good quality, so I will keep it. Please correct the specs on this flask.

I was looking for a small flask, and found that they are hard to find! I came upon this - which is ideal. Fantastic. Actually.... I like that it is virtually indestructible, as a small flask I’m glad I don’t have to treat it with kid gloves.While it may be difficult to do, this would be AMAZING if the designers came out with a model with a ‘cap keeper’ of some sort... it’s a small cap, and kind of a drag that you have to be careful with it....overall, you won’t find anything better IMHO...

This is very well made (seams are perfect). I see what others meant about not too many threads on the lid, but it's not much of an issue. The curved shape of the Snow Peak fits your hip better, but this is a very nice little flask, especially for the money..