If you want it fancy, the previously mentioned snow peak round Ti flask. This one has gone on many a trip over the years. A little patience is needed to fill it but @ 63gm it's nice and light.
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I’m not a big drinker, but sometimes a flask seems like a cool idea. Long hikes. Backpack trips, etc.
just wondering. Any ideas? I’ve seen very inexpensive lightweight plastic options. But what I’d I want to class it up a bit? Pewter?