GSI Outdoors Boulder Flask (6oz)

(1 customer review)


  •  Abrasion-resistant construction with grippy silicone bumper allows the flask to stand up to rugged use.
  •  Handy, integrated hinged top is impossible to misplace with a silicone grip that’s easy to open.
  •  With a wider mouth than many flasks, opening allows easy filling, pouring and drinking.
Last updated on August 26, 2023 5:05 am

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SKU: 90130 Categories: , Tags: ,


Your favorite beverage can now go anywhere in the Boulder Flask. Includes graduations for measuring and can take any fall with the sleek bumper flask. The Boulder 6 Flask holds 6 fl oz, has a shatter-resistant body with bumper, graduations, and a hinged silicone cap making it impossible to misplace.

Shatter-resistant, copolyester resin body, and grippy, silicone bumper mean this flask can go anywhere.

Wide mouth makes for easy filling, pouring, and drinking.

Hinged top with silicone grip is easy to open and impossible to misplace.

Convenient molded graduation marks.

BPA Free.

holds 6 fl oz.  Dimensions: 3.2 in x 1 in x 5.6 in.

GSI Outdoors, Boulder Flask, Sand, 6 fl. oz., GSI Outdoors

Price: C $50.51
as of August 26, 2023 5:05 am
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Price History


Current Price C $50.51 August 26, 2023
Highest Price C $50.51 June 4, 2023
Lowest Price C $50.51 June 4, 2023
Since June 4, 2023

Last price changes

C $50.51 June 4, 2023

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1 review for GSI Outdoors Boulder Flask (6oz)

  1. Greg

    Ultralight yet reliably sturdy. Rubber and plastic, but quality material that would take a lot to break. The top cap is fully attached so there’s no losing the cap. These are available in 6oz and 10oz. Math-wise that makes the 6oz roughly 1/2 a shot less than a half-pint and the 10oz version is 4 shots less than a full pint. Good for being compact, sturdy, and very lightweight, but the volumes are limited.

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