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Zpacks Arc Zip Torso Height?

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Viewing 6 posts - 1 through 6 (of 6 total)
PostedApr 9, 2015 at 1:52 pm

Hi there,

I'm having a hard time chosing the right size for my Arc Zip backpack.
If I measure my back from the C7 bone to the Hipbelt line (as in http://www.rei.com/learn/expert-advice/backpacks-torso-hip-size.html) it is around 58cm or 22.8".

I've got an fstopgear backpack where the size of hipbelt bottom to shoulder straps is 48cm but I usually pull them up to 52cm, the backpack also gets closer to my back then.

I think that the right size for the Arc Zip would be around medium (21"), but I'm really unsure. I wondered if it would make sense to include the adjustment straps, also to get the top closer to my back or vary depending on comfort or load.

What do you think?

Also: What volume/accessories do you have or recommend?

PostedApr 9, 2015 at 2:23 pm

What Zpacks recommends is to measure the distance from the bottom of the hip belt to the point where you want the shoulder straps to attach. Best way to do that is to put on a pack you own now, get a yardstick, and stand in front of a mirror to measure. Keep in mind that the hip belt on the Arc is 4" tall, so if your hip belt is a different height you would need to adjust where you measure from accordingly (take half the difference — for example, if your current hipbelt is 3" tall then the difference is one inch, a half-inch of that would be above the top of your current hip belt and the other half-inch would be below the bottom of your current hip belt, so you would hold the bottom of the yardstick a half-inch below your current belt).

PostedApr 9, 2015 at 2:30 pm

Well, you mean the actual tightest part in the hipbelt I assume – that's not always the center if I'm not mistaken.
Question is if it is the center of the Arc Zip Hipbelt or if you can generally noy always measure the bottom, as they write..

Kevin Babione BPL Member
PostedApr 9, 2015 at 2:30 pm

Joe used to have a photo describing how to measure the torso height on the website but I can't find it any more. I have the Arc Zip in a tall (22" torso) and it fits me perfectly. I'm an even 6 feet tall (183 cm), but it's the length of your torso that drives it.

I see he now offers a torso adjustment option along with the load lifter straps. Your best bet would be to spend that extra $15 to ensure you can dial in your fit.

In terms of options here's what I did:
– Had a ribbon with a clip put in on the right side to hold my Platy upright
– Went with top pockets on both sides (they're removable and I don't use them on every trip)
– Got the hipbelt pockets (which I really like)
– Left off the hydration port because I carry my Platy outside the pack
– Got one shoulder pouch but I'm not completely sold on it yet
– I did get the load lifter straps, but I haven't used the pack enough to tweak them

I did NOT get the option to open the pack from the top. For me (I sleep in a hammock) the best part about the Arc Zip is that I can lay it in my hammock to load it. I put my underquilt in the top, my top quilt in the bottom, and then everything else easily fits in between. It's a brilliant design!

PostedApr 10, 2015 at 1:16 am

Thanks for the replies!

I think I will go with the load lifter/adjustment straps – Joe writes that you don't need them if the pack fits, but I'm not sure how well this works. I'm only used to backpacks where you can adjust the shoulder straps like this so far it worked quite nicely.. I also seem to vary it slightly depending on load or clothing.

PostedApr 13, 2015 at 7:58 am

Thanks Kevin

Do you recommend the adjustment straps then? Although I know my size now, I thought it might be better in terms of fitting under different loads, etc..

I would then just get the adjustment and loader straps

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