MSRÂ DromLite Bag
Enjoy lightweight, high-capacity water storage on the trail. The MSR DromLite bag collapses down to the size of its cap. A food-grade lining ensures better-tasting water and can handle freezing.


- Get water-hauling utility without the weight or bulk; lightweight, durable film construction is perfect for fast-and-light travel, backpacking and hiking
- Collapses down to the size of its cap for ultimate space savings; this supreme packability comes with the weight savings to match to keep you moving quickly on the trail
- Elastic bungee keeps it tightly folded when empty
- An improved BPA-free, food-grade lining ensures better-tasting water and can handle freezing
- Versatile 3-in-1 cap lets you fill, drink and pour with greater ease
- Improved attachment: Loop at top makes it easy to hang and carry
- Made with rugged film and RF-welded seams for reliable durability
- BPA-free
- Assembled in the U.S.A. of U.S. and imported materials
Made in USA.
View all MSR Water Storage Bags| Best Use | Backpacking |
|---|---|
| Liquid Capacity (L) | 2 L: 2 liters 4 L: 4 liters 6 L: 6 liters |
| Liquid Capacity (fl. oz.) | 2 L: 67.63 fluid ounces 4 L: 135.26 fluid ounces 6 L: 202.88 fluid ounces |
| Collapsible | Yes |
| Material(s) | PU |
| Dimensions | 2 L: 8.5 x 16 inches 4 L: 10 x 18.3 inches 6 L: 11.3 x 20.6 inches |
| BPA Free | Yes |
| Weight | 2 L: 4.6 ounces 4 L: 5.1 ounces 6 L: 5.7 ounces |
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Oh no! What happened???
I purchased several of these a few years ago when they were lined with food grade silicone and they quickly became my absolute go-to favorite piece of gear. But I recently bought another to add to the collection and to my horror they are lined with polyurethane!!!!???? The taste is horrific, and I can only imagine what these chemicals leaching into the water will do to a person. They claim it's food grade, well I'm sorry MSR, that's not good enough. You had a perfect product, why on earth would you change it? I feel totally blindsided and betrayed by one of my most trusted and favorite outdoor gear manufacturers. Not happy, not at all.
Indispensable for group backpacking
I have two of the 6L DromLite bags and they fantastic for group backpacking trips. We fill both of them when we get to camp and we're set for water for a while. They don't weight much and take very little space when empty and rolled up. The eyelet makes them easy to hang up. I put a small loop of cord in the eyelet so they're easy to hang on a tree branch or clip to something with a carabiner. I recommend getting the spigot cap to go with them to make them a little easier to dispense water from.
Tough and don't leak
I have several of these of all three sizes which I use for kayak-packing water into the Everglades. They're easy to use, don't leak; and don't impart flavor to the water. They're very tough, though I think a raccoon could bite through the fabric, so they stay in the secured hatch. Though they don't afford that kind of protection, I have not had a problem with leaks if the caps are screwed on tightly. I have recommended these many times. Being soft, they conform to the inner hull, so take up less room than a plastic water bottle. Packing 10 days worth of water, you need all the storage space you can get.
Perfect addition to any water system
Bought the Dromlite 4L to go with my gravity flow 2L filter system. Does exactly what its supposed to do in an ultralight package! It is so convenient to have a bladder to fill at camp and then not worry about getting more water that day. Fills up quickly from my filter, and the end of the filter screws perfectly onto the Dromlite. Haven't noticed a bad taste at all, maybe because I washed it out when I got it and let it dry thoroughly after every trip. have left bag hanging full off of trees multiple times and have seen no durability issues. Highly recommend as a great addition to any water system.
I am baffled how useless
I am baffled how useless the nozzle and cap design is on these bags. What a waste of money. the bag itself seems decent but how can you sell something with such a trash nozzle. I didn't even think to test it out before I left on my back country trip considering the high regard I hold for MSR. I wrongly assumed MSR would engineer something so unusable. No flow volume out of the nozzle. It would take you 3+ minutes to gravity fill a regular size Nalgene. The nozzle twists off but it has a lanyard attaching it to the bottle that is so short it makes it a chore to even unscrew it. I just had to cut it off because it was so inconvenient. Total flop. Used it day one and never bother to try it again.
5 star potential, but not quite!
Overall I am pretty happy with the bag. It holds water as it is supposed to, looks like it will be durable, but time will tell. I have to mention that the water comes out tasting strongly of plastic, it seems to be getting better but that is after 3 weeks of daily use. I tried rinsing it with multiple fills of water, with and without dishsoap in it. Still tastes plasticy. The other minor complaint if the string on the small cap that screws onto the larger cap. The string attaching the two constantly gets snagged and stops the small cap from screwing on. I removed the string, but have a feeling someday the small cap is going to go missing now. Other than these issues, I'm quite happy with the bag.
Perfect for climbers
Simple, bomber - this can take a surprising amount of abuse, anything short of purposefully attacking it with a crampon. I toss it around with the same abandon I would a Nalgene, I certainly don't treat it as nice as other hydration bladders. It's a lot nicer to carry up a multi-pitch climb in a small pack than a bottle which sits awkwardly and digs into your back. Not to mention it's lighter and more space efficient than a bottle. I have the hose kit that I use sometimes for hikes or trail runs but most often I just use this on its own and sip from it at breaks. It's very versatile.
Flip caps string could be better…
Have not used yet. The quality feels good. The middle black refill where the string is on both the 6L and the 10L get caught and are hard to open and close. I’m sure they will be easier to use than the 10L Camelback which is heavier.
Bad taste in water be aware
I just got one of these bags the 2L one whit my mosko moto panniers and the taste of the water got awful first i thinks it was some contaminated water or bag but after some good disinfection and cleaning I travel 800 kms carring the bag on my bag and i got the same super bad plastic flavor on the water i used the water to clean my gear insted of drinking or washing my self. buyer be aware maybe you can drink it, but maybe you can get sick don't get these bag as you primary source of clean water, because MSR drop the ball on these. Great functionality but not for drinking.
So bummed!
I purchased this bag a few weeks ago and was so excited to have it back in my life. Years ago I traveled with a similar one on the back of my bicycle for a year through the US, Mexico and Central America. It was indispensable for transporting clean water around. I had someone borrow it from me last year and they loved it too, so I let them keep it and decided to purchase another one. Ordered this new one made of polyurethane, used it ONE time and before it made it home safely to be cleaned.. two days later... MOLD!!! I tried everything to get rid of it, contacted MSR, got their ideas to use different soaps and bleach and still nothing. I understand the material is cheaper, but seriously?? They were even out of ideas of how to remove the mold, MSR employee Daven eventually replying, ""From what it looks like, there isn't much direction I have left for this unfortunately. Sorry that happened"". I am beside myself with how this is acceptable for a product that used to be so amazing. Based on the other reviews I read, I see I am not the only one. Will not be purchasing any MSR products if I don't have to in the future. This is unacceptable.

