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The customizable pack that does it all.

The Osprey Aether 70 Backpack really is the pack that does it all from gear-heavy weekend backpacking trips and ski tours to mountain-climbing excursions. Built with outstanding load-carrying comfort, the Aether 70 features a new IsoForm CM hip-belt that adds stiffness and padding for better performance with heavy loads without increasing the Aether's weight.

  • IsoForm CM hip-belt balances firmness and cushioning for optimal carry while the spacer mesh IsoForm harness offers a comfortable fit
  • IsoForm CM hip-belt can be heat-molded at any authorized Osprey dealer for a customized fit
  • LightWireHD peripheral frame effectively transfers load to the hip-belt
  • Airscape backpanel supplies a smooth, breathable contact surface
  • Single 6061-T6 center stay maintains the backpanel shape
  • Choose between the S, M, L, and XL sizes depending on trip length and the amount of gear you carry
  • Large top area and front J-zip offer wide, easy, and quick access to the main compartment
  • Lid converts to a lumbar pack with built-in belt for short excursions from camp
  • Durable materials and construction ensure a solid pack that lasts season after season
  • External hydration sleeve in backpanel simplifies refilling and protects pack contents from spills (hydration bladder not included)
  • Compatible with AddOns packs (AddOns sold separately)
  • Osprey recommends the AddOns Daylite detachable daypack when your weeklong trip requires a little extra gear
  • Wide-mouth access to sleeping bag compartment with divider helps keep your gear organized
  • Zippered hip-belt pockets provide secure storage
  • Dual-access stretch mesh side pockets stash your water bottles
  • Dual side compression straps and StraightJacket compression help to balance and secure the load
  • Removable sleeping pad straps, two ice axe loops and handle wraps, and Stow-on-the-Go trekking pole attachment help to keep your gear securely in place

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Osprey Packs Aether 70 Backpack- 4000-4600cu in

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Here's what others have to say...

5 5

Get it.

  • Familiarity: I've put it through the wringer

Best backpack around for general use. I've taken it mountaineering with heavy loads, ultralight trekking on the Appalachian trail, and traveled with it. Still going strong with little signs of wear. All the features might seem like too much, but they are really amazing. I'm constantly trekking and thinking, "I wish my backpack had a strap/hook/place for/compartment for..(insert purpose).." and almost every time..oh wait! It does have that feature!

5 5

My pack-crush...

Tried several packs and went with this one. Zero regrets. Had it out snow-camping, and long and short backpacking trips. Awesome pack. Carries the weight exceptionally, breathes well, durable. (Only negative is it doesn't come with a rain cover. )

My pack-crush...
5 5

Pictures true to actual color?

I picked up this bad boy in midnight blue and I love it! Our picture makes it look almost black, but once I had it in person I noticed the color is more of a dark navy. Not as dark as pictured above. Hoping to get some rad action shots soon to give a better example of what I'm talking about. If you have any questions on this guy, feel free to email me directly at

I am thinking about this back pack or Arial 65. I checked the size of the backpack but not sure which size would be more comfortable for me between S and M size. My height is 5'5, and weight is 147 pounds. My body type is slim but my chest is little bit thicker than ab since I used to work out. Please help me.

Responded on

You should measure your back to determine your torso length. Have a friend use a tape measure from the bony part that protrudes out right under your neck (put your head toward your chest so it's more obvious) down your spine to the iliac crest (flat shelf bone at your hips above your butt). Then compare however many inches that is to the size chart. You're chest is not a factor because there is an adjustable sternum strap.

5 5

bomb-proof pack!

  • Familiarity: I've put it through the wringer

I got my Osprey Aether 70 back in 2007 and have used it for almost every trip I've gone on until about a year ago when I went with something slightly lighter and still find myself picking up the Aether first. This is my "go-to pack" for sure, I have been flat out abusive to this thing and it has delivered! The suspension system, although heavy, can carry anything you throw at it! I've loaded this pack to the rafters and every time is comfy and balanced. I would highly recommend this pack to anyone looking for a solid pack that can handle abuse and won't quit! I would buy another if this one was stolen or damaged beyond repair.

4 5

Couldnt Ask for more

  • Familiarity: I've used it several times

Great pack. Light, durable "convenient" and comfy.

Osprey knows what they are doing plane and simple. I have used it for overnights and extended Days, alike. My one gripe is that there aren't a bunch of "organizer" pockets.....Then again, like I said above, its a very "convenient" pack. The more pockets you have the more junk you stuff in them.....not always a good thing.

Overall a great pack, zero complaints so far.

Couldnt Ask for more
5 5

Osprey does it again

  • Familiarity: I've put it through the wringer

I've used this pack on several trips over the course of the summer. From weekend trips to 8 day getaways, this pack absolutely nails it. Super light yet incredibly durable construction, great volume, and comfort all combined into one. I was able to carry all of my personal gear, food, stove/pot, tent and additional gear necessary to lead trips for 6+ days without any issue.

As with any pack, fit is half the battle. If you're unsure how to properly fit and adjust your pack, I'd suggest taking it to a local retailer for some assistance or using a friend's guidance.

I am 6'0, 175lb, and the medium fit me just fine. Osprey's size chart is accurate.

5 5


  • Familiarity: I've used it several times

This thing is one of the most comfortable packs Ive worn. I'm super impressed and stoked to take it on some more trips.

5 5

God-Like Pack.

  • Familiarity: I've used it several times

Bought the Aether 70L(s) last year for my 10day camping trip up too Algonquin first time ever doing back country hiking. I was able to fit everything in this bag! it has an awesome sleeping bag compartment which i can also stuff a large Coleman pillow in there as well. I then put my clothes at the bottom of the pack including 2 shirts, Shorts, Hoodie, 2 socks, 2 boxers. I then would put my Therm-A-Rest Trail lite sleeping pad on top of that, which would be followed by my drysack full of food.(10days worth), i kept my rain gear on top coat+pants with some fuel in there as well. It has a handy strap on the top to keep everything secured and tight. The top part of the pack had bug spray, deodorant, toilet paper, first aid kit, map, light, and couple of other stuff all fit nicely (which can also be used as a day pack BONUS!). The bag can withstand a beating and is very durable it has many compression straps to make it fit properly and snug. Side pockets were good to hold my water bottle and my platypus. The hip belt is totally awesome great feel to it and doesn't dig into your hips,i kept a pocketknife, cliff bars, lighter, bug spray and bug net. I would recommend this bag to anyone who was interested in looking to buy a bag, its downright amazing, 3 of my friends also picked up the same bag Aether 70L and Ariel 55 they would say the same thing that i've stated about it. You get what you pay for and it's always worth it to spend that extra dollar on something that will make your camping life easier, no regrets hope this helped you on your purchase!

5 5

Great pack

  • Familiarity: I've used it once or twice and have initial impressions

Used a couple of times and cannot believe how well the pack feels when you have a ton of gear in it and like that you can get a specific size so the pack fits perfectly to your body size.

I would recommend this pack to anyone who is getting into serious backpacking and needs a durable pack that is well built but also has lifetime warranty which proves the company stands behind what they are selling.

Five stars

Did you know you can fit a 5gallon bucket...

Did you know you can fit a 5gallon bucket inside this thing? Awesome! and so glad I didn't have to clip it to the outside.

Best Answer Responded on

What was in said 5 gallon bucket? Picture or it did not happen.

Responded on

Stashed rope, crowbar, brushes, bolts, a #2 camalot, clifbar wrappers and a pickle smell...

Stashed rope, crowbar, brushes, bolts, a #2 camalot, clifbar wrappers and a pickle smell...

I'm considering to get a backpack for all...

I'm considering to get a backpack for all my camping and overseas trips (I live in Singapore), and I have plans to Central / South America for about 3-6 months and maybe some winter camping in Switzerland. Which do you think is a good option of a backpack - the Osprey Aether 70 or 85, the Tatonka Escape 60, or the Northface Terra 65? So far it's been 10 over years since I last backpacked, I'm totally a novice to backpacking gear :). BTW, I'm 5' 4", about 165lbs (yes, a considerably small sized for Asian :)). Thanks for the info!

Responded on

Oh yes I forgot to mention I'm also an avid fan of motorbiking in country areas.. so hopefully the backpack wouldn't stand in the way of the motorbike :). Thanks for any info here! Appreciate it :)

Best Answer Responded on

If you are currently in the states heres what I would do. I would order this bag in both sizes the 70 and 60 to see if your stuff fits in there. The 60 is smaller of course but, if you can fit everything in a smaller bag its going to be a lot easier for you, especially travelling. I would stay with the Aether though, great pack and Osprey is an awesome back pack manufacturer.

5 5


  • Familiarity: I've used it several times

This is my first full-on backpacking pack. I'm really impressed with the versatility, ergonomics, and thoughtful features. It's rugged yet comfortable, and it's been a pleasure to hike and camp with.

I have fit the following in there at once with ease: My Marmot Earlylight 2p tent, a sleeping back, a thermarest prolite 4, MSR whisperlite, fuel, and a bunch more. I can also easily fit the larger Bearvault internally.

The hydration integration is clutch, as is the versatility of the top compartment (can be used as a hip pack).

My only gripe is I wish they included an integrated rain fly like they did on my escapist backpack. It's very weird that it's not included.

I'm hooked on Osprey products.

5 5

Great Ergonomic Fit

  • Familiarity: I've used it once or twice and have initial impressions

After researching for a few months and trying on many different packs, I always came back to this one based on the comfort, lumbar-back support, weight handling, gear-rigs/warranty, and looks.
I have been a massage therapist/health educator for over 10+ years as proper alignment,comfort, and utilizing body mechanics while carrying any weight is the upmost important to me. For me this pack is the best option, i tried out the Gregory Baltoro; shoulder straps and lumbar support were not the right fit for me while carrying weight. Opsrey Atmos; my mid back started developing pains as the pack was fully adjusted but still was not the right fit for me.

This pack, Aether 70 -i filled it with 30 lbs and kept it on for over 30 mins in the store-walking up/down stairs, and it felt fully connected with my body, no pains or discomfort anywhere as i did this 3 different times before making my final decision as I highly recommend to take your time trying on your pack.

This pack seemed to be an overall favorite amongst many other backpackers based on similar likes and comfort.

I will post another update once i come back from yosemite on a 25mile hike/trail.

Happy Trails...

I really like the design of Osprey backpacks...

I really like the design of Osprey backpacks and set on getting one, but trying to decide on a 70 or 85L pack. Thinking that I would need something that could handle a 7-10 day trip max although would probably re-fuel every 4+days. Maybe for Philmont and then also for any family backpacking trips.

Best Answer Responded on

I'm of two minds on this:

1) If you're going to use it for family backpacking, then that extra volume can come in handy for light-but-bulky crowd pleasers (for my crowd, it's bagels). You can also choose to under pack it anytime you want. I go with slightly larger volume backs on scout campouts since i have to carry stuff that others will forget.

2) The smaller the pack, the more judicious you'll be when packing... and 70 liters really should be big enough for what you're describing.

3) if your plans include winter camping and/or you just have bulky gear, then I'd go with the larger size.

4) if you have gear that can strap to the outside (z-rest, sleeping bag in a dry bag, etc. Or if you don't carry a tent... then I'd definitely say go with the smaller pack.

There, that's four minds.

Me and my Aether 70

Me and my Aether 70

On top of Big Bald, with my Aether 70, Appalachian Trail, 5-2014