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🥾 Stay rugged, stay refreshed — the flask that keeps pace with your adventure.
The GSI Outdoors Boulder Flask is a 10 oz BPA-free, shatter-resistant hip flask crafted from durable thermoplastic resin. Featuring a leakproof hinged silicone cap and a clear body with measurement marks, it’s designed for easy filling and monitoring your drink level. Weighing only 4 ounces, it’s perfect for hiking, camping, and travel, combining rugged durability with lightweight convenience.
| ASIN | B07YVL3MYG |
| Best Sellers Rank | #16,773 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #12 in Camping & Hiking Hydration Flasks |
| Brand | GSI Outdoors |
| Brand Name | GSI Outdoors |
| Color | Orange |
| Customer Reviews | 4.5 4.5 out of 5 stars (474) |
| Date First Available | August 5, 2019 |
| Finish Type | Polished |
| Global Trade Identification Number | 00090497793479 |
| Included Components | GSI Outdoors 79347 Boulder Flask 10 Oz Orange |
| Item Dimensions LxWxH | 3.7 x 1.1 x 6.5 inches |
| Item Package Dimensions L x W x H | 8.15 x 3.74 x 1.57 inches |
| Item Volume | 10 Fluid Ounces |
| Item Weight | 0.26 Pounds |
| Manufacturer | GSI Outdoors |
| Material | Copolyester Resin and Silicone |
| Model Name | 79347 |
| Model Year | 2020 |
| Package Weight | 0.13 Kilograms |
| Part Number | 79347 |
| Shape | Rectangular |
| Size | 10 Fluid Ounces |
| Suggested Users | Unisex Adults |
| UPC | 090497793479 |
K**T
Great flask!!
This is the best plastic flask I have bought. Highly recommend for the use and the durability. No leak, easy to unscrew the top and easy fill. Fits perfectly in a jacket pocket and not detectable with metal detectors (wink,wink).
C**E
Good flask
Great flask for the beach
D**G
One tough cookie!
Driving down the road at 55 mph I hear a thump. Looking in my rear view mirror I see something tumbling down the middle of the road behind me. Suddenly I remember setting my flask on top of my car before leaving home. I turn around to retrieve the flask overjoyed to discover that it only suffered a bit of stuffing on the screw cap. This thing really is shatter resistant! Perfect size for those 3 -4 mile walks. Fits nicely in a pocket.
A**R
Rugged and Reliable
Rugged and reliable. Easy to seal and keeps its seal. Good size for various activities. The only drawback is that it is a bit difficult to clean and dry out.
C**R
Perfect for the golf bag.
Works great, perfect size and no leaks.
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.
A**N
Nice flask
Lightweight. High quality. Well-designed lid. Transparent walls make it easy to fill and see the volume.
D**S
Nice Flask
Great little flask No leaks
C**E
I bought this for my trip to Italy and wanted something small enough to put in my purse. This was the perfect size. It doesn’t hold a lot of water but it’s enough to get you buy until you can refill.
T**D
Top
F**S
Passt viel rein
M**E
Bonne qualité, exactement tél que décrit !
P**D
lightweight and easy to fill
Trustpilot
2 weeks ago
2 weeks ago