Item Package Dimensions L x W x H | 6.4 x 3.8 x 1.25 inches |
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Package Weight | 0.14 Kilograms |
Item Dimensions LxWxH | 1.1 x 3.7 x 6.5 inches |
Item Weight | 4.8 ounces |
Brand Name | GSI Outdoors |
Color | Graphite |
Material | Copolyester, Silicone |
Manufacturer | GSI Outdoors |
Part Number | 79346 |
Size | 10 Fluid Ounces |
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GSi Outdoors Boulder Flask Thermos,Unisex Adult, Unisex_Adult
Price: | $31.15$31.15
Free Return on some sizes and colors
Select Size to see the return policy for the item |
Material | Copolyester, Silicone |
Color | Graphite |
Brand | GSI Outdoors |
Finish Type | Graphite |
Product Dimensions | 1.1"D x 3.7"W x 6.5"H |
About this item
- Wide mouth makes for easy filling, pouring and drinking.
- Convenient molded graduation marks.
- International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.
Additional Details
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Top Brand: GSI Outdoors
Product Description
Celebrate your outdoor adventures with the GSI Outdoors Boulder Flask! Its copolyester resin construction is crafted to withstand any bumps, drops and dings along the way. The wide mouth design makes it easy for both filling up or pouring directly into a cup–plus an attached hinged silicone cap ensures a good grip even in cold temperatures. This BPA-free flask also features graduation marks molded on its surface, so you can easily check how much beverage remains inside without having to guess. Whatever your “poison,” you’ll enjoy on-the-trail sippin’ without any foul taste from the flask material. Don’t leave camp without this handy companion by your side!
Customer Reviews |
4.6 out of 5 stars
301
|
5.0 out of 5 stars
7
|
4.4 out of 5 stars
253
|
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Price | $31.15$31.15 | $24.95$24.95 | $34.95$34.95 |
Size | 10 ounces (about 300 ml) | 720 ml (about 24.3 ounces) | 720 ml (about 24.3 ounces) |
Type of Lid | Hinged Silicone Cap | Flip-Top | Twist-Top |
Colors | Graphite and Orange | Mountain View, True Black, Stainless, True White | Mountain View, Orangeade, True Black, Brushed |
Material | Copolyester, Silicone | Stainless Steel | Stainless Steel, Polypropylene, Silicone Copolyester |
Product information
Technical Details
Additional Information
ASIN | B07W6B1Z5V |
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Customer Reviews |
4.6 out of 5 stars |
Best Sellers Rank | #26,035 in Sports & Outdoors (See Top 100 in Sports & Outdoors) #15 in Camping & Hiking Hydration Flasks |
Date First Available | August 5, 2019 |
Videos
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MUST WATCH Review of the GSI Outdoor Flask
Nicki Frates
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The ReCap: GSI Outdoors Boulder Flask and Thermos
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers appreciate the hip flask's leak resistance, size, and durability. They find it lightweight, perfect for camping, and easy to pack in bags. The deep threaded cap prevents leaks, and the high-quality plastic should last forever. Many customers also like the quality, design, and clarity of the flask.
AI-generated from the text of customer reviews
Customers appreciate the leak-resistant hip flask. They mention that the deep threaded cap doesn't leak any whiskey on a rugged trip through the Grand Canyon. The size is great and there are no issues with seal.
"...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..." Read more
"...The cap screws down securely and the bottle does not leak, it is clearly built quite tough, and being able to see through the smoke side makes it..." Read more
"...and they are great quality and store well, easy to fill, and they don’t leak. Great purchase. Would definitely recommend." Read more
"...high quality but the second time I used it I ended up with a backpack full of liquid...." Read more
Customers appreciate the hip flask's size. They say it fits nicely in backpacks, is sturdy and rugged yet slender and stylish. The cap has a tight fit so you don't have to worry about leaks.
"...6oz size is perfect for most occasions." Read more
"...It slips in and out of my sling bags with ease, and the size is just right for my purposes...." Read more
"...larger sizes should one want to carry more, but for me, the small size is the sweet spot." Read more
"...It’s the perfect size and shape. Doesn’t take up much room, but could have a drink when needed...." Read more
Customers appreciate the durable quality of the hip flask. It has a rubber grip and no cracks after being crammed into a camper. The high-quality plastic should last forever, and it has never failed in well over 16 trips.
"Looks good, rugged, doesn't leak, cap locks back to stay out of the way when in use, easy to portion out pours, graduation marks are very helpful...." Read more
"...screws down securely and the bottle does not leak, it is clearly built quite tough, and being able to see through the smoke side makes it really..." Read more
"Love these flasks! We bought four to stock our camper and they are great quality and store well, easy to fill, and they don’t leak...." Read more
"The flask felt high quality but the second time I used it I ended up with a backpack full of liquid...." Read more
Customers appreciate the lightweight and compact design of the flask. It fits in their pockets and is easy to pack in bags. The flat design makes it perfect for backpacking.
"...While the flat design makes it very easy to pack in either bag, the rubber bumper that goes around the outside grabs on to my backpack when I’m..." Read more
"This 6oz flask is light and the perfect size for my backpacking needs...." Read more
"It is a good flask. It is almost indestructible and has no leaks. It is light and has a moderate capacity, so it can be safely moved without the..." Read more
"...Lighter than most typical flasks and plastic with reinforced rubberized edges to help keep it in place while it's in your pack...." Read more
Customers enjoy using the flask while camping. They find it sturdy, practical, and easy to use. The clear design allows them to monitor liquid levels, which is useful for cooking. Many find it suitable for day hikes, overnight backpacking trips, and adventures.
"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...." Read more
"Fantastic flask to use while camping It can get banged up and still works and looks great. Highly recommend!" Read more
"Great little flask, easy to use and pour, sturdy and very practical. Highly recommend!" Read more
"...also has gradient measurements on the side which is really handy if you are using it for cooking." Read more
Customers like the flask's quality. They say it's small, lightweight, and a great camping flask.
"It is a good flask. It is almost indestructible and has no leaks...." Read more
"Great little flask, easy to use and pour, sturdy and very practical. Highly recommend!" Read more
"Great flask, love that you can see through it to see how much there is and great size if you wanna share with a couple people." Read more
"...of the flask were sealed together, so not user error, just really bad quality" Read more
Customers like the design of the hip flask. They say it looks good, is rugged, doesn't leak, and the cap locks back to stay out of the way. The rubberized exterior provides a nice accent for color and cushioning.
"Looks good, rugged, doesn't leak, cap locks back to stay out of the way when in use, easy to portion out pours, graduation marks are very helpful...." Read more
"...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..." Read more
"Love these flasks! We bought four to stock our camper and they are great quality and store well, easy to fill, and they don’t leak...." Read more
"...flask to use while camping It can get banged up and still works and looks great. Highly recommend!" Read more
Customers appreciate the clear flask. They find it useful for pouring drinks and keeping track of how much liquid is left. The flask is small and discreet, making it easy to carry around.
"...not leak, it is clearly built quite tough, and being able to see through the smoke side makes it really easy to keep tabs on remaining water...." Read more
"...Transparent so you can see how much liquid courage you have left." Read more
"...It is very small and discrete. The dimensions of the 6oz are 3.2 in x 1 in x 5.6 in -- the product description was inaccurate when I ordered...." Read more
"...High quality plastic should last forever. Love that it's see through as well." Read more
Reviews with images
Good flask!!!
Top reviews from the United States
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- Reviewed in the United States on October 21, 2024Looks good, rugged, doesn't leak, cap locks back to stay out of the way when in use, easy to portion out pours, graduation marks are very helpful. 6oz size is perfect for most occasions.
- Reviewed in the United States on May 19, 2023Size: 10 Fluid OuncesColor: OrangeVerified PurchaseGreat 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!
- Reviewed in the United States on June 20, 2021I got this to carry water with me in a small daypack or sling bag along with other daily essentials. While the flat design makes it very easy to pack in either bag, the rubber bumper that goes around the outside grabs on to my backpack when I’m trying to push the bottle down one of side pouches. It isn’t a big deal, but worth noting. It slips in and out of my sling bags with ease, and the size is just right for my purposes.
The cap screws down securely and the bottle does not leak, it is clearly built quite tough, and being able to see through the smoke side makes it really easy to keep tabs on remaining water. One nice thing is that it doesn’t look too much like a hip flask, so drinking from it in public doesn’t feel weird, and it just looks like you’re drinking from a small water bottle.
So far I’ve been very happy with it and would recommend it hands down.
- Reviewed in the United States on January 11, 2025Size: 16 Fluid OuncesColor: Mountain ViewVerified PurchaseOut of all the possible functions, this canteen…is not entirely heat-resistant. I tested it by pouring hot water into it: sadly enough, it…compressed itself on the top-half of the canteen. I had to remove the hot water by leaving it open for the hot air to be free, and slowly-but-surely drinking it until cool. The result? The damage…is too-far done. At least, its functionality still works! It still stands normally, even with half of it’s body compressed! Of that, ten marks still okay with it!
So! “Is it a thermos?” No. “Is it resistant to outside heat, like the sun?” Yes.
- Reviewed in the United States on June 9, 2024Size: 16 Fluid OuncesColor: Haute RedVerified PurchaseLove these flasks! We bought four to stock our camper and they are great quality and store well, easy to fill, and they don’t leak.
Great purchase. Would definitely recommend.
- Reviewed in the United States on September 24, 2024This 6oz flask is light and the perfect size for my backpacking needs. It feels great in the hand and the cap operates nicely (and can’t be lost when unscrewed). GSI has larger sizes should one want to carry more, but for me, the small size is the sweet spot.
- Reviewed in the United States on December 12, 2024Size: 10 Fluid OuncesColor: OrangeVerified PurchaseFantastic flask to use while camping It can get banged up and still works and looks great. Highly recommend!
- Reviewed in the United States on December 13, 2024Size: 10 Fluid OuncesColor: OrangeVerified PurchaseDeep threaded cap didn’t leak any whiskey on a rugged trip through the Grand Canyon. Transparent so you can see how much liquid courage you have left.
Top reviews from other countries
- BillReviewed in Canada on January 13, 2025
5.0 out of 5 stars My new golf accessory
Size: 10 Fluid OuncesColor: OrangeVerified PurchaseExcellent product . I use it to carry my birdie juice !
- P FredReviewed in Canada on January 3, 2025
5.0 out of 5 stars flask
Size: 16 Fluid OuncesColor: Haute RedVerified Purchaselightweight and easy to fill
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SteffenReviewed in Germany on September 30, 2024
5.0 out of 5 stars Einwandfrei super Flachmann
Size: 10 Fluid OuncesColor: OrangeVerified PurchaseSchneller Versand
- RafalApeReviewed in the United Kingdom on April 5, 2024
3.0 out of 5 stars Small crush on snowboard and this cracked
Size: 10 Fluid OuncesColor: OrangeVerified PurchaseUnfortenly after one small crush on snowboard this cracked and make my jacket and all gear sticky in juice witch was inside
Looks nice is light Byt metal one will ne wayy more suitable for me
- TylerReviewed in Canada on July 22, 2024
5.0 out of 5 stars Lightweight and Strong
Size: 10 Fluid OuncesColor: OrangeVerified PurchaseAbsolutely love it!
Took this on a 4 night hike, and it held just enough for me to have a few drinks every night. It is very light in comparison to metal flasks, also super sturdy and leak proof. A perfect hiking companion.
I really really like this product. 100% recommended!