I picked up one of these before the obvious re-use of existing bottles occurred to me. It's middling-large and does the job.
As for any hipflask, I dunno. They don't really make sense to me and seem to belong in the marketing / lifestyle world of "look at us, we've included a bottle opener in our component / frame".
Hey ho, looks like I'm the grump this week (Stu - can we have a dedicated "grump" smilie please )
My scales only weigh in 5 gram increments.
Flask weighs 90g filled with water it weighs 265g therefore volume equals 175ml.
Then I looked on the bottom and its stamped 6oz.
I use a tesco napoleon brandy half bottle. It's plastic and hip flask shaped. Drink the brandy if you really want then refill with whisky. Or I use a water bottle for a bigger drink. These are my two usual approaches. I do have some small hip flasks if I'm counting grams not drams.
thenorthwind wrote:+1 for Bearbones flasks, and maybe a bit smaller than your average flask for bikepacking friendliness (size + weight + need to not wake up with a sore heid).
Short & wide - (4oz to 6oz?) with a captive screw top. Just the right size to fit into a rear cycling jersey pocket without hopping out when bouncing down the rough stuff (or crashing into a tree).
Hmmm: Bearbones jersey, hipflask & sticker gift set sounds like the perfect lifestyle collection for the 2017 Winter Bivi 'event'... ...and the run-up to Christmas 2017 .
)
when you can get them from here for a far more reasonable rate 
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