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An internal frame pack has exactly that. An internal frame that is usually manufactured out of plastic, aluminum or titanium. Because the frame is manufactured inside the pack itself it allows the pack to fit closer to the body which helps with center of gravity. The downside is you loose ventilation between your back and the pack.
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Both an internal frame and an external frame should transfer all the weight to the hips. If it doesn't, then it is poorly designed.
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many MFG,S today seem to be catching on with how the padding is desinged
in order to allow the back to breathe especially in winter where sweating
can be dangerous. sometimes i think that aspect of a pack is a afterthought
when choosing a pack. 1,how much can it hold
2,sholder straps&waistbelt
3,how it rides
4,cost.
that is how many people purchess a pack.
also the (cool factor) come into play
is it tacticool enough?
will it match my bdu,s and so on.
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I use an internal frame..Jack Wolfman.
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When I look at a pack, I look at:
1. Will it hold everything I need it to?
2. Is the suspension comfortable for the load it will hold?
3. Is it rugged enough?
4. Do I like the way it looks?
5. Price.
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I look at a pack differently,...only one way...and that is...is it sub 9kg for my 35 litre pack and is it sub 12kg for my 60 lit back pack....simple as that! and to make things worst, I have these two bags readily packed...(as I have a few sets of camping equipment that I can make into at least 4 complete sets in 4 backpacks, enough for 4 people...it's past of my Bug Out startegy where each member (since there are 4 of us) to grab a bag each...
If its a 3 to 2 days of terkking..I would take my Karrimmor Trail 35 (with a water bladder), and it has no frames......but if its for a longer hike and gonna be about 4 days to 8 days, I would take my Jack Wolfskin Denali 55, since it can carry more food and my sleeping bag.
I have a few other back packs ..like the Low Alpine Military type...Aquavac 35L and a few other drybag backpacks...that should do though.
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I could go either way, but I mostly use internal packs for light duty so that's why I voted that way.
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