I have a 40L pack what size is best?
1087814
Don't bother buying this. I purchased one last year before a backpack to Glacier NP and the bag was full of holes after the first leg. My partner put her pack in a duffle bag and hers was fine. Its a great idea but I think it is too lightweight for air travel. In case you go ahead and buy one I have a Dana TerraPlane X 5800 cubic inch and used a large.
1309495
We have a size L for the Osprey Argon 70L which is loose. We also have a size M for an Osprey Aether 60 and that is not tight either. So i would think max a size M, but maybe the size S will even fit. Maybe Osprey website has more info?
23092
Older models came in S/M/L. Current year model is S/M and M/L. the risgh sized pack depends n your torso length. Check out http://www.ospreypacks.com/en/web/sizing_and_fitting. My torso length 15 right between the two sizes at 20.5 so I went with the small. It adjusts perfectly and is really comfortable on long all day hikes.
1919537
I replaced the 2L that came with it with this one when I need over 2L, but otherwise I use the factor bladder: Platypus Big Zip SL 3-Liter Hands-Free Hydration SystemWith 3L in it, it is a tight fit and the bladder is taller than the one that came with it, but I thought it worked ok. That said, I don't normally carry 3L and if I did all the time, I'd probably want a bigger pack. The other option would be to throw a couple bottles of water in the side webbing pockets. With the other stuff I normally carry, 3L makes the pack pretty tight when it's full of water, but obviously as you drink it down, it gets looser. I can say I really like the pack overall, it's great quality. I replaced the 2L that came with it with this one when I need over 2L, but otherwise I use the factor bladder: Platypus Big Zip SL 3-Liter Hands-Free Hydration SystemWith 3L in it, it is a tight fit and the bladder is taller than the one that came with it, but I thought it worked ok. That said, I don't normally carry 3L and if I did all the time, I'd probably want a bigger pack. The other option would be to throw a couple bottles of water in the side webbing pockets. With the other stuff I normally carry, 3L makes the... » Read More I replaced the 2L that came with it with this one when I need over 2L, but otherwise I use the factor bladder: Platypus Big Zip SL 3-Liter Hands-Free Hydration SystemWith 3L in it, it is a tight fit and the bladder is taller than the one that came with it, but I thought it worked ok. That said, I don't normally carry 3L and if I did all the time, I'd probably want a bigger pack. The other option would be to throw a couple bottles of water in the side webbing pockets. With the other stuff I normally carry, 3L makes the pack pretty tight when it's full of water, but obviously as you drink it down, it gets looser. I can say I really like the pack overall, it's great quality. « Show Less
232852
I have a Kelty 44 and a medium fits it just right. I would guess that it would take a large cover to cover a 65L pack
786705
You have more than enough room in large pack. I don't havea smaller oneto compare it to. So if your going to carry a lot of stuff id say large is way to go.
130634
what i do is.... go to a bike shop, try it on. Then decide on size. You will love this pack!
1788680
I don't know which one is the best since I only own and use the original size. However, if I traveled more frequent I would invest in the travel size to take up less space in me bag.
1959221
I would go with the 38, I got the 42 and it is a smidge too big , I have collapsible stock also
863544
I have a 45L backpack and this one is noticebly smaller so I will have to say that it's 30L.
564591
For me, the 20-liter size is a littIe bit bigger than the average pack size. I have 2 and they are the best I've ever owned!
106868
I am pretty much the same size and the pack fits just fine for me. Shouldn't be a problem.
2115369
ok now there is no 43 size . so now or get a 40-42 =M or get the 44-46=L . L will be the best fit
773117
I would go with the 35L. I can put my large purse, two pairs of shoes and a set of clothing in there, with a little to spare. Comfort-wise that size might be better for a taller guy, too.
956908
It really depends on how much stuff you want to carry with the backpack. The 20L size is smaller/narrower than the typical backpack, but it worked very well for our Disney World trip for carrying 4 light jackets, 2 water bottles, and some snacks ... all of which pretty much filled the backpack. If you want to carry more things than that in the backpack, you might want the 33L size.
1308538
Having used this pack in the Army, I would recommended getting the frame. 40lbs should feel OK but the heavier you go you'll want more padding.
12040
Probably XL. I'm a 34/36. I have M and L. The M fit perfect. The L would probably go to 38, but I'm not sure about 40. Good luck.