How to Choose a Backpack

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This cavernous, waterproof pack comfortably hauls heavy loads for extended off-map explorations while the OutDry® membrane keeps precious gear and layers dry regardless of the weather.
Shop similar productsFrame Type | Internal Frame |
---|---|
Number of Stays | 1 |
Pack Access | Top |
Number of Exterior Pockets | 5 + main compartment |
Best Use | Climbing Mountaineering |
Material(s) | Nylon |
Frame Material | Polypropylene / aluminum stay |
Reservoir Compatible | No |
Gender | Unisex |
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Awesome lightweight large pack for expeditions, I am 5'10" with a 19" Torso and I found the biggest miss Mountain Hardwear made in the redesign of this back was the elimination of a size Medium. With the average Male Height around 5'9" to 5'11" this does not make much sense to me as the overlap in the sizing is the average height of a male making the fit a little tricky. I originally bought a M/L and found that it was a little too long for my torso even I fall in Mountain Hardwear's torso range for the pack. I found the M/L road too low on my lower back and the shoulder straps were a little high. When I switched out for the S/M size it fit much better although it feels a little short and the angle of the load lifting straps is shallow. I own many packs and I have traveled around the world on many mountaineering expeditions. I bought this pack for a trip to Mount McKinley to replace my 10+ year old Gregory Denali Pro. I love the Gregory Denali Pro but at almost 8 lbs that is a lot of extra weight to be carrying. I have used the Gregory Denali Pro on McKinley, Aconcagua, and Vinson Massif and it has served me well. This pack is about 3 lbs lighter than the Denali Pro - and when you are going on large expeditions all of the ounces add up and turn into lbs quickly so the ability to shed 3 lbs with one gear upgrade is pretty appealing. On summit day having a pack that is 3 lbs lighter makes a big difference. There are some trade offs compared to the Denali Pro - the Denali pro has a far better padding and fit adjustments and flexibility but I have loaded the BMG with 70-80lbs and it carries fine. For winter expeditions you will typically be wearing a few extra layers so that helps with the fact there is less padding in the BMG. Fit - Rate 2 - Mountain Hardwear should not have eliminated the medium size. The other reasons I give the fit rating a low score is because the load lifting strap angles are not designed properly and the padding on the waste and shoulder straps is thin - this is OK if you have extra winter layers on. Weight - Rate 5 - As mentioned above this package is about 3 lbs lighter than the Gregory Denali Pro. The other pack to consider in similar size for an expedition would be an Arcteryx Bora Bora and this pack is still abotu 2 lbs lighter than that pack. Volume - Rate 5 - This pack has great volume and is sufficient for expedition style climbing. The bullet pocket on the back is a nice feature to give you easy access to items you might need during the day and is designed so when the main pack is stuffed it is not compressed or difficult to access. Features - Rating of 4 - Bullet Pocket is a great design feature - Outdry - this is a big plus I took this out on a training climb when it rained and the pack absorbed very little water on the surface and the inside stayed dry. The big plus is if the outside of the pack doesn't absorb water is keeps the pack weight down. - Main compartment - it is really just a big tube making it ideal for expedition style climbing where you can load and stuff a lot of gear in the bag - I am not a big fan of broken up compartments for expedition packs. - Crampon bag- this is a nice feature so you dont need to put your crampons in a main compartment or try to strap them on the your pack. THis make it easy to access. - Ice Axe holders - Mountain Hardwear did a good job leveraging teh bottom of the crampon pouch combined with straps to create storage for an ice axe - Pack Lid Cover/Pouch - The lid pouch is good with a safety compartment and clip. The only negative is Mountain Hardwear could have added a strap or velcro to attach the lid to the main pack at your neck. When the main compartment is empty and you use the lid pack to store anything it ends up slipping down and flopping onto the back of the pack - the real solution to this in the field is to just remove the pack lid and put it in the main pack compartment or to just leave it at camp since the only time this would be an issue would be on a summit day when the main pack is pretty empty - Hip buckle/Adjustment System - I like the design of the hip tightening system but the only thing that I dont like is that if the buckle were to break in the field there is no way to repair or replace it - which is not a good thing because a Expedition pack with a broken hip buckle could be either extremely annoying or even risk stopping your expedition.
[This review was collected as part of a promotion.] After one usage, in water elements to take advantage of the dry bag function, the pack suffered a tear at the base of the bag. This was extremely frustrating as there was exposure to water for the remainder of the trip. The bag was not overloaded nor carrying too much weight to result in such a tear. Very frustrating.
I have both the current pack in m/l size and the former rendition in m. These are superb packs that can carry very heavy loads. I have had this pack to the summit of Denali which was a 3 week climb and it performed flawlessly. Those were loads up to 80 pounds and I trained with loads up to 100. That's a LOT of weight! With several extended trips in rugged country under the belt, This pack has yet to exhibit a single flaw. Stitching, materials, function, buckles, pulls, zippers etc. are all functioning at 100%. This pack is worth every penny. Cons: There is a steel bar that runs up the spine area of the pack for support I have had to bend back into shape a few times. Just put hand on bar and push hard. That's it for issues. Highly recommended.
I'm 5'10'', 175 with a 34 waist. The M/L torso length is too long for me and the S/M waistbelt padding is to short for my hip bone. MH does not offer the new outdry waist belts as an optional item so I ended up getting a medium fitlock hipbelt. It has a similar pocket for the new aluminum stay and the padded portion is a bit longer. Too bad they didn't keep the three sizes like the old BMG but I liked the new improvements over the old BMG enough to try and make this new outdry pack work.
I have used my BMG-105 for over three years now (the previous version). After inspecting the latest version at the REI, I have to state some observations. The old model has served me very well under heavy loads, with no excessive wear, tears, or broken buckles. For the meager shoulder and hip padding, it’s been almost painless. The twin straps, compounding at the belt buckle, make tightening the waist belt very easy and convenient (maybe you don’t need heavily sculpted waist padding if the top and bottom of the belt is being pulled by two straps). The new model reverts back to the same ‘one strap’ set-up used on most packs, unfortunate. The old model had the sleeping pad attachments (I had to add longer straps) on the back of the pack’s bottom, not under it like the updated model. How is one supposed to stand a loaded pack on a rolled foam pad? There must be room at the lower back of any pack to strap a roll, rope, or tent, not underneath it! The straps and buckles of the new model don’t seem as mitten friendly as the old one. I make my own crampon pouches out of ballistic nylon pack cloth, and I either strap them to the back or just under the lid, on top of the spindrift collar. The new model has a crampon pocket that is far too small for any crampons, therefore useless. The new model has heavy duty straps to support ski bindings, a great addition. However, what’s with the Velcro sealing the wand pockets? The wand pockets are not supposed to be secure pockets, such a hassle. It seems that the convenient pockets at the front of the pack have been omitted, which is a shame. The lid is easily removed to stow into the pack when only a small load is packed. This is one of the great things about the BMG-105, it ‘sucks in’ to a smaller pack better than any big pack out there. Remember the compression straps that ran underneath the old model’s rear pocket? They’ve been removed to make the pocket water resistant. But, at least the old design gave you a fighting chance of using the pocket when the main compartment was firmly stuffed. I guess one cannot have everything. The out-dry design of the new model is a gimmick. When I want to keep my kit dry, I use individual waterproof bags, inside the pack (items like a tent might not be dry when packed away). If the pack is sleeping outside during damp weather, I’ll put a very light pack cover over it. The pack retains a lot of places to affix equipment to. I’ve added proper buckles to the lid to secure my helmet. A mountaineer is looking for a comfortable, lightweight, Cordura bucket, and the BMG-105 is the best solution out there, almost. I hope mine lasts until the next generation because there are too many deal-breakers with the latest model.
Bought this specifically for Denali and it worked perfectly. For a pretty lightweight pack it carries loads well and MH has engineered this pack with reinforced loops (carry and waist) so you can attach your pack tether and sled sling directly to them without extra looping through other parts of the pack. Only problem was the male waist buckle broke, luckily I was able to get another one on the mountain, phew... I'm 5'8", 165# and the pack fit fine.
I like the one giant compartment to store things in, no complicated trap door zippers. The shoulder straps and sternum straps are pretty small on my burly frame. The hip belts are laughable at best, not only are they under-padded, they hardly come around my body and leave my hips hurting after a day of hiking. The one thing this bag has over really any other in this class is the waterproofing. That is the only reason I bring this on trips.
I wanted a backpack that would be a longterm investment. After my first trip I can already see that I've got exactly that. Great quality, great color, great water resisting outside. I also liked the thought through different pockets the bag contains. I guess a zipper to access directly the biggest compartment would have been nice - but then I knew before purchase that it wouldn't come with this bag. Great backpack!
Used this for a Denali Prep Course on Mount Baker. Truly is waterproof, shed both rain and snow extremely well, attachment points for sled rigging made things very convenient, plenty of room to haul everything you'll need for a longer expedition. The only fault I have with waterproof packs is if you aren't careful in a rain storm and rain manages to get in...it will not get out.
[This review was collected as part of a promotion.] The BMG 105 handles heavy loads better than any expedition sized pack I’ve used so far. Being a tall and skinny person, the medium / large size fits my length well but the hip belt is nearly maxed out when I’m not wearing many layers. After one year of use the frame somehow broke in half, which was disappointing and seemed odd for such a large pack. but Mountain Hardware replaced it, no questions asked. I wish the side pockets were a bit bigger (deeper) to better hold pickets. It can be difficult to get multiple pickets in those tight side pockets when carrying a full load. I like the large zippered pocket which allows separation of dry and wet gear or allows access to bigger items you may not want to bury(first aid, hat/ goggs, repair etc ...) crampon pocket is very helpful , and helps protect other gear. This is a simple mountaineering expedition pack that works well for heavy loads and winter expeditions.