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  • GSI Outdoors - Boulder Flask -

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  • GSI Outdoors - Boulder Flask -

GSI Outdoors Boulder Flask

Temporarily Out Of Stock

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2 Reviews


Boulder Flask

The kids might get some dehydrated desserts on the backpacking trip, but the GSI Outdoors Boulder Flask is a dessert specially reserved for parents and other responsible adults. GSI Outdoors made it lighter than standard flasks, and it's still exceptionally durable for the outdoors. It has a good grip, and the attached cap can't get lost.
  • Flask made light and durable for backpacking
  • Shatter-resistant body with silicone gripper sides
  • Hinged cap doesn't get lost
  • Item #GSI005O

Tech Specs

co-polyester, silicone
10 fl oz
silicone gripper, hinged cap
3.7 x 1.1 x
Claimed Weight
Recommended Use
Manufacturer Warranty

Tech Specs

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No metal. Good sneaky flask.

    I bought this flask for backpacking. I like it. It's lightweight and holds quite a bit of liquor, actually. More than any other flask I have, which makes it perfect for a weekend trip. BONUS! It is also completely plastic and silicone, which means metal detectors won't find it at pricey concerts (as long as you hide it well).