Not your old military Issue hydration pack
930138
Definitely not the military issue hydration pack I had back at NTC.... The outer cover is decent quality, but it's the cheapest hose, bite-valve, and bladder out there; hard to seal the lid completely, tastes plasticky, bite valve is hard to use, and hose kinks incredibly easily.

If you accidentally buy this, replace the bladder with the 100oz bladder here and you'll be at the quality you were originally looking for: https://smile.amazon.com/gp/product/B00412HV8W/
2810469
This is a nice run-pack that happens to also have a hydration bladder.  Even if you don't run, bike, hike, walk across desserts, camp, hunt, fish, or attend the annual Burning Man, these are still useful for hot days outside behind a mower or in the garage.

The bladder is a sealed, plastic pouch with a heavy-gauge tubing and a cap for filling. Two recommendations:  First, wash the bladder several times before use. Otherwise your water will taste like plastic (not very refreshing).  Second, when done, empty the contents and let dry before putting the cap back on.

Once you fill the bladder, just slide it into the largest pocket and feed the water tube up through the shoulder straps (you can choose which side you prefer). The bladder has two eyelets and  inside the pocket are two hooks that go through them.  This will keep the bladder securely held and prevent it from bunching down as water-weight is removed.

Once all that is done, you still have additional pockets to store other items to keep your hands free.  This pack is a half-size backpack, so phones, headphones, wallet, cash, etc all fit quite easily. Including the pocket for the bladder, there are three zipper pockets.  The webbing across the back can be adjusted to allow for additional loads. You can also use the clips to secure hats (non-fitted).

In all - great pack with hydration.  My last pack was smaller and not constructed as well. Also, the bite tip was looser.  Remember when I said to dry it out?  Yeah, ants can find water.  I pulled my old one out of a kitchen cabinet (the bladder was clear).  I had about 500 or so dead ant bodies in the tube. Tasty!  The company sent a promotional sample for evaluation without promise of a review.  I received the ACU Camo and it looks good.
909153
I bought the Viper 5 Hydration pack for my son for some of his more intense mountain bike rides. Needless to say, I was completely envious - my Camel doesn't even come close to the Osprey! Special features are the easy threading/ access to the tube feed , HUGE bladder and the comfort of the shoulder straps once the chest and waist straps are secure. Lastly, it is one tough looking pack, with plenty of extra storage without the bulk. I highly recommend this product!!!!!!
3224943
Great hydration pack, I use it for mountain biking and it has just all the pockets and elastic holders I need for my multi purpose tool, air compression pump, key clip to keep your keys in place, tire patch kit, mini sealant bottle and many more pockets to hold your items in place.  It also has one large pocket for your hydration pack for easy removal, a second large pocket to hold any large items and to side pockets to hold tissue or additional water bottles. This pack is just the right size for use on trails longer than 20 miles.
741847
Fantastic hydration bladder.  This fits really well in my 5.11 Rush 72 which I use for 3 day or shorter backpacking trips.  It rides wider than narrower bladders, meaning it spreads itself out better and doesn't bulge into your back or into the space of your pack.  Very durable seams and connections, the tube has all of the disconnect hardware, and the mouthpiece cover is solid and easy to locate.  The new style cap on the bladder opens easier and closes faster but still makes a great seal.  I love having the extra liter of water portage, too, which is nice when you have to cover longer distances between water sources.  The shorter height than other 3L bladders is great for packs that aren't as tall, but are wide enough to handle a wider bladder.

One favorite feature of this bladder style is the semi-connected center seam which separates the bladder into 2 chambers.  They are connected to each other, but it really prevents sloshing, similar to the ballast chambers in a large boat.  Keeps the center of the bladder from bulging into a large cylinder, too.
841474
I couldn't be more pleased with this product; it has been a great purchase.

The Geigerrig Hydration Engine has the most innovative design of any type of hydration pack. At first glance, I could tell that it was made to be durable and convenient. I have had challenges with other packs with both filling the bladder and also cleaning it after. In the past, the tubes of other packs have built up a dark residue because the water can't be completely cleared out. This pack opens completely at the top, which makes it easier to be filled completely, and after use, it can easily be turned inside-out to dry. Both the tubes, the one for the air hand-pump and the other for the hose, can be disconnected and dried. You can also put the bladder in the dishwasher!

The hydration system is great because it can be pressurized so you don't have to struggle for water. Just bite down and the water will spray into your mouth! It also comes in handy if you ever need to spray water to share with others, or to clean dirt off of your equipment. Yeah, no more tilting your head awkwardly below the pack to get water when it's low, or shaking it to share with an outside source.

Again, I am very happy with the product and very pleased with the service that Geigerrig provides. I'm confident that you'll be pleased with your purchase as well.
2541830
I love my single barrel hydraquiver! Initially, I was afraid that the straps would chaff and it would be too tight or too loose. But after a few adjustments, I found the sweet spot. I love having the water bottle within reach, yet I forget that it's there. It doesn't bounce around or bother me in any way. The storage locations are great too. I keep an energy goo or two in the shoulder mesh, and my keys, phone, and ID in the main compartment. The pack is made of various materials which are well suited for each intended use. Definitely a high quality pack. Nicely done, Orange Mud.  Wish I was more fit to run longer mileages, so I could justify getting the double-barrel.
4862872
I really like the design of this hydration pack. It is very light weight, comfortable to wear, and is big enough to pack food and other gear along with the water pack.

The water pack itself is easy to fill up and close off. It fits perfectly in the backpack.

The backpack fits both my spouse and I comfortably. The straps are adjustable and the back is breathable. There are many easy access zipper pockets along with a waist storage pouch on the waist belt. The main compartment zippers move at an angle towards each other which cause a large opening at the top and smaller towards the bottom. This is a genius design because it allows you to fill up your bag yet prevents it from spoiling out easily.

This is our second hydration pack and it is far better than the other one we have.

I do wish it came with a chart showing all the features and use cases but that's okay.

Overall I love the design, lightweight, size, and breathability. I did receive this product at a discounted rate for my honest unbiased opinion.
234252
This hydration pack works very well. Plenty of pockets for storing ALOT of things, and some well though out pouches and Velcro to hold things. It can also carry a rolled up jacket which is nice, and has both a stomach and chest strap to secure the bag to your body well. I am only giving this 4 stars because the color I received is not a darker navy blue as the picture indicated, but rather a light blue that I am not a big fan of. But the bag works great and exactly as I wanted it to.
3303875
Great product!  Even though I'm an avid hiker, I hadn't owned a hydration pack, honestly I thought they were kind of strange, until I was hiking in the White Mountains with my cousins.  They all had them and seeing how convenient they were, I decided to purchase.  I used this pack for a strenuous 13 mile hike in the Adirondacks and I was not disappointed.  I had more than adequate water supply and the pack itself was more comfortable than my old previous pack.  Even packed full of supplies, it was comfortable, not cumbersome, and breathed better, didn't hold sweat into my back.  Love it and can't wait until I can use it again!
3721707
I just received this item today (within the projected delivery dates) and I have to say I rather impressed.  I figured I'd use this review to give a more detailed product description since the one provided by the seller wasn't very detailed.  There are some cool features to this carrier that I think need to be mentioned.

This is the first time I've purchased any Condor equipment and I have to admit this H2O Carrier seems very well made and looks like it's durable.  It is definitely made of a Nylon/Cotton blend (Mil. Spec) and the stitching of the carrier is very precise throughout.  I've done a little research about Mil. Spec. stitching and this looks like it falls within the standards but I'm not 100% certain.  All I can say is that it looks very durable and gives no indication that the carrier will suddenly fall apart at the seams in the near future.

This carrier is well insulated.  From the pictures provided by the seller I couldn't tell if the lid of the carrier was insulated or not.  I can now tell you IT IS.  The entire section that holds the bottle is insulated.  The insulation is about 1/4" thick on lid, sides, and bottom of this section.  The front pocket is not insulated however.  There is also a grommet on the bottom of the bottle section so excess water can drain out.

I have to admit that this carrier is a slightly bigger than I thought it would be despite the fact that the seller's dimensions are about right.  This EASILY holds my 32oz widemouth Nalgene bottle.  There is even a little extra room to hold a Nalgene with the narrow/tall mouth or any other larger bottle.  Both zippers seem to be of high quality.  They interlock well and form a tight seem.

There is plenty of MOLLE webbing and it does include 2 MOLLE straps to attach it to your backpack or waist belt.  On the front of the pocket there is a webbing but it's made out of the Ny/Co camo fabric that makes up the body of the carrier and not the traditional MOLLE webbing found on the rest of the carrier.  The D-rings used to connect a shoulder strap, etc. are made of metal, not that cheap plastic.  A nice touch.  On the lid of the carrier there is a Velcro strip used to attach a patch of some sort.  Also, there is a 1 X 2" piece of webbing stitched to the top of the lid that has a Velcro closure on one side.  This would be a perfect place to put your water purification tablets or anything small you want to put in there.  Another nice tough.

On a final note, this is the first multicam item I've purchased and I think it's great.  I've always like the woodland camo pattern but I must admit this multicam looks really cool and I can see how it can work incredibly well in any non-arctic environment.

Like I said, I just got this and haven't field tested it yet, but that will be taken care of in a few weeks when I hit the trails.  As soon as that happens, I will be sure to include an update of this review if there is anything I feel needs to be mentioned.  In the meantime, if you have any questions please feel free to ask in a comment.
2093134
This hydration pack is light weight and has a good quality backpack. The backpack is adjustable and well stitched. The backpack alone should last a long time. The hydration bladder holds 2L and the wide opening allows for easy cleaning. Most importantly I have not had any leaking from the bladder. The one thing I do not like is the mouthpiece valve and I will be changing it to the type I find more comfortable. I do own some of the expensive big name brand hydration packs and this one has performed just as well as those. I did receive this product at a discount in exchange for a honest review.
757516
I was pleased to receive what I saw in the featured picture. Also, I am happy to have found a hydration pack that includes both the pack and the water bladder. I mostly use this pack for day trips and exercise. It seems quality, reliable, and lightweight. I have enjoyed its use so far, and I hope to have the possibility to continue using it for many more adventures!
1691000
I have a few hydration packs, but I bought this one because I needed to carry a lot of water for a few desert trips. This, coupled with a few 2.5L Platypus Platy bottles, is the best hydration pack system I have used so far. When I have exhausted one bladder, I can just screw the drinking hose onto the next one. Alternatively, if I am only going on a day hike, I can also opt to bring only a single, smaller platy bottle attached to the drinking hose.

The setup is minimalist, lightweight, and modular. Additionally, the location of the filling/dispensing hole means that this system is easier to fill/dry compared to more expensive CamelBak systems.
387096
Hands down the best hydration pack I came across on amazon. The material feels great, zippers work smoothly, no leaks in the bladder/tubing, the pockets are spacious, and it's just a comfortable design. Would definitely recommend this to anyone looking for a hydration pack for whatever needs and also in search for one with pockets to store your things. Not to mention the great customer service that comes along with this item, 5 star customer service as well.
2714132
This is a solid hydration pack, thick material, and tight seams. I replaced my old Camelback bladders and couldn't be happier. We used them right after receiving them and took three 7+ mile day hikes. I still had cold water (no ice to start with) at the end of each hike.
I found that I needed to bite the nipple a little harder than my last bladder to get good water flow. The material did not cut with a harder bite.
I needed to make slight modification to connecting the new bladder in my existing backpack.
274857
Received the green Reyes right before my ride at the canyon. Quite the upgrade from my small BCG academy pack.
Pros: Start with the outside, very durable yet lightweight material. The straps are very comfortable and you don't really feel them or have to sit there and play with them to get them just right. Decent amount of space, fit wallet keys a full body co2 and 4 of the big co2 cartridges with plenty of room left over. And my Galaxy S4 with its huge Ballistic case fit pretty well in one of the pockets. Don't carry a bike pump but it had the sleeve for it. has external straps so when you don't fill it all the way you can tighten them to keep it smaller. The bladder is awesome, much easier when putting in ice or filling up with water than even the Camelbacks (IMO). it has some kind of zipper thing in the bladder to make it smaller (form fit) if not used it looks like a big rubber soda bottle. I didn't use it and the bladder still fit well in mine without any leaks even when I threw it around to "test" it for leaks. The snap system for the hydration hose is awesome, read a review that it was difficult to figure out but if you have somewhat of an idea of how packs work then you will be fine. Or watch Hydrapak's YouTube video. The little bite thing for drinking is of good quality and allows for maximum flow when your dying of thirst. Oh and the green color is AWESOME.

Cons: Only one, the advantage that camelback has is their Ventz system. Hydrapak doesnt have that and in the Texas summer it gets a little sweaty back there.

Other thoughts:
When filling the bladder for the first time try not to overfill it because it is difficult to judge initially. Will try to figure out the form thing eventually I bet its ok but I don't see the point in it. Was only out with it for a little over an hour so I could easily see this as being a 3 hour pack like it says and if you want buy a small 1 liter pack from Hydrapak  and throw it in the bladder compartment Im  sure it or a small energy drink bottle would fit with it. A good idea might be a frozen water bottle to keep your water cold then drink it when it thaws...

Overall its a great pack and the savings via Amazon Prime were awesome. Ordered it Wednesday and got it on Friday in time for Saturday's ride.