Boulder Flask

This is the best plastic flask I have bought. Highly recommend for the use and the durability. No leak, easy to unscrew the top and easy fill. Fits perfectly in a jacket pocket and not detectable with metal detectors (wink,wink).

Great little water bottle if you're a little tight on space, since a more flat-ish shape works nicely in a lot of the bags I use. 10oz is a good amount for sipping on or just getting you through a few hours outside before your next fill up, though it'll go quick if you're thirsty! I can't speak to its durability over time, since I haven't had it for very long, though it appears to be all that it's advertised to be! Plastic feels pleasantly firm, the cap doesn't leak (At least mine doesn't), didn't seem to have any lingering flavors after an initial rinse or two, and is a great way to keep an eye on how much I have left to drink! Only thing holding it back for me is that despite the rubberized exterior being a great accent for color and some added cushion, it also makes it a little grippy when trying to slide into bags as well as possibly picking up little bits of dust and debris easily from wherever you set it down. Not a deal breaker for me, but I wouldn't mind seeing another style that's less rubberized!

Driving down the road at 55 mph I hear a thump. Looking in my rear view mirror I see something tumbling down the middle of the road behind me. Suddenly I remember setting my flask on top of my car before leaving home. I turn around to retrieve the flask overjoyed to discover that it only suffered a bit of stuffing on the screw cap. This thing really is shatter resistant! Perfect size for those 3 -4 mile walks. Fits nicely in a pocket.

Really nice bottle for just having a bit of water without getting weighed down. The clip broke off quick but I just tore it off and try not to lose the cap. I have the smaller version too but that clips is still intact.

This is my favorite water bottle for traveling. It holds 16 oz of water, is lightweight, has a rubber bumper so it can handle a fall, the lid is attached (so you can't lose it) and it fits anywhere without bulking out your pack. It is not the most stable thing out there - but if I'm not actively drinking from it, I'm fine with closing the lid so it can lie flat or get stashed (I haven't had any trouble with leaks at all, and this thing has been across the country multiple times). It's not dishwasher safe, but since I don't usually have access to my dishwasher when I'm traveling, I'm OK with that.

Works great, perfect size and no leaks.

I have a new favorite Flask. Very light, wide mouth easy fill, can see level no more over fill, cap snaps in open position and thread fit is prefect. Happy Bourbon drinker :-)

Great flask for the beach

Endlich ein Flachmann bei dem man sieht wie viel noch drinnen Ist.

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lightweight and easy to fill

Bit of an off-label use, but I bought this to store mouthwash on my bathroom vanity because it is too small for a big bottle of Listerine on the counter. It doesn't its job and looks good too.

More plastic than I thought - and bigger than I thought - but both probably on me. Will let me be an alcoholic whilst travelling with ease