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🥾 Stay rugged, stay refreshed—your trail-ready flask awaits!
The GSI Outdoors Boulder Flask is a 6-ounce, BPA-free, shatter-resistant hip flask designed for hiking, camping, and travel. Featuring a clear thermoplastic body with molded measurement marks, a leakproof hinged silicone cap, and weighing just 4 ounces empty, it combines durability, convenience, and safety for outdoor enthusiasts who demand reliable hydration gear.
| ASIN | B07YVKXMH3 |
| Best Sellers Rank | #8,500 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #9 in Camping & Hiking Hydration Flasks |
| Brand | GSI Outdoors |
| Brand Name | GSI Outdoors |
| Color | Sand |
| Customer Reviews | 4.5 out of 5 stars 579 Reviews |
| Finish Type | Unfinished |
| Finish Types | Unfinished |
| Global Trade Identification Number | 00090497793431 |
| Included Components | GSI Outdoors 79343 Boulder Flask 6 Oz Sand |
| Item Type Name | GSI Outdoors 79343 Boulder Flask 6 Oz Sand |
| Item Weight | 0.12 kg |
| Manufacturer | GSI Outdoors |
| Manufacturer Part Number | 79343 |
| Material | Plastic |
| Material Type | Plastic |
| Model Name | 79343 |
| Model Number | 79343 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Shape | Rectangular |
| UPC | 090497793431 |
| Unit Count | 1 Count |
| Volume | 6 fluid ounces |
M**S
High-quality, high-capacity, easy to pack
High-capacity, but very packable due to efficient shape. Opening/closing is easy, cap can't be lost, good seal. Overall fit and finish indicate high quality materials.
J**.
My favorite water bottle!
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.
S**S
Very well made. Perfect size and rugged.
Love this flask!!!
J**S
Running water bottle
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.
A**R
Works well. No leaks. Holds plenty of water.
Great for day hiking on a trail. Fits in pocket and holds enough water for a 2 hour hike. Leave the large containers and bottles in the car.
R**E
Excellent quality
The flask is good quality and translucent so you can see what you have. There are useable markings to quarter the quantity. It seals well in hot and cold weather
J**A
Not stable plastic
The flask has expanded like a carton of curdled milk. Can’t imagine that the plastic is uncompromised. Would return it but am outside the window.
V**E
Works as advertised.
Doesn’t leak. Can see when to stop filling. Easy to grip and hold. Holds plenty for s fladk. Plus it looks super.
J**H
Cost of the product is high
Very Costly , finish is not as expected
T**D
Alles super
Top
G**O
Muy chafa, se rompió en dos meses. Tenía fugas. Pirata.
Muy padre! Muy bonita! Mucha estética! Pero no sirve para nada, siempre chorreaba, aunque estaba bien cerrada me mojaba mis mochilas de camping y hiking de tequila y whisky. Mi bebé de 1 año estaba jugando con ella y se le cayó y se rompió. Una porquería chinota súper chafa. Nunca más!
J**T
Plasticky
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
T**R
Lightweight and Strong
Absolutely 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!
Trustpilot
1 week ago
1 week ago