GSI OutdoorsBoulder 10 Flask, Rugged and Shatter-Resistant, Outdoor Hip Flask, Sand, 10 Fl oz, Color: Graphite

The GSI Outdoors Boulder Flask Thermos is a fantastic companion for outdoor enthusiasts and travelers looking to enjoy their favorite beverages on the go. This flask has quickly become my go-to choice for its style, reliability, and impressive thermal performance.First and foremost, the design of the Boulder Flask is sleek and eye-catching. The durable stainless steel construction not only looks great but also ensures long-lasting durability. The textured grip adds a touch of elegance and provides a secure hold, preventing any accidental slips.When it comes to thermal performance, this flask truly shines. The double-wall vacuum insulation keeps my beverages hot or cold for extended periods. Whether I'm sipping on a steaming cup of coffee during a chilly hike or enjoying a refreshing cold drink on a hot summer day, the Boulder Flask consistently delivers on its promise.Another feature that sets this flask apart is its convenient size. With a generous 10-ounce capacity, it strikes the perfect balance between portability and capacity. It easily fits into my backpack or bag without taking up too much space, making it ideal for outdoor adventures or daily commutes.The leak-proof cap ensures worry-free transportation, preventing any spills or leaks. I appreciate the thoughtful design that allows for easy pouring and drinking, thanks to the well-designed spout and integrated cap.

Awesome flask! Seems durable and holds enough to get pretty darn tipsy. Lid seals tight. Pulling it out, unscrewing the lid, flipping the lid back and forth, and screwing the lid back on can be done one handed.

Great quality and good size

This is a great flask ONLY after purchasing seal separately. The Seal washed out when washing the 1st time. If you purchase, I would plan on buying this seal & making this a great flask without leaking being a worry. The seal is a #14 "O" Ring & around 1 Dollar. I purchased seal at my local Hardware store but I assume the big Home Improvement stores have these as well. I would highly recommend this flask after fixing this issue. Great size & cool design. Hope the plastic arm holds up over time. I will update this review if not.

Haven't used it yet, but I like the size, construction and useability of it.

This container holds liquids, and when I screw the top on, they don't leak out. The bottle seems pretty durable, too, which is a plus.I will note, this is bigger than I expected. You can't fit this flask into the average pocket. It certainly won't fit in and pants pocket, and likely won't fit in most jacket pockets either. That's on me; they obviously can't make it smaller while still holding the same volume. But it's a good thing to be aware of.

These are excellent. Won't set off a metal detector, and won't leak. I found that if I left bourbon in a metal flask for a few weeks, the bourbon got dark. I thought I was getting a little metallic flavor too, but that might just be from the darkened whiskey. Anyway, those days are over now. Bonus is that you can see what's in there, how much is left, and how much you are pouring.

I bought this to not set off metal detectors and bring some whiskey into Broadway shows where drinks are like $25. It worked but now I mostly just use it camping.