This project had been on my list for a long time: a very light foldable backpack, similar to a model I bought, which unfortunately gave up after a lot of use.
Short key data on the backpack:
Weight: 85gr
Volume (calculated): 14l
Packing size in the bag: 12x7x7cm
The main material is Ripstop Nylon PU-coated, 68g/m². The shoulder straps are also made of ripstop nylon and are connected to the lower polyamide straps via two lightning fasteners. I chose the lightning fasteners because I find it practical to be able to "clip" the backpack to something, for example when canoeing or sailing.
I have written a detailed instructions for the construction, including a pattern. So if you feel like rebuilding the backpack, I'd be happy to see you at:
https://www.instructables.com/id/Ultralight-Foldable-Backpack/
In order to optimise the weight of the backpack, the following changes could be made:
Instead of the ripstop nylon I mentioned, you could perhaps use a lighter material variant, but I wanted to have a bit of security, as I sometimes tend to overload backpacks.
In addition, the 20mm webbing could be replaced with narrower webbing and the buckles could be replaced directly with ladder locks; this would save even more weight.
Have fun building your own backpack,
Bine
Bags
Foldable Ultralight Backpack incl. instructions
Lightweight, waterproof minimal backpack incl. instructions
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