wow, that's cheap, too big for my current project though.
Due to some judgement and other errors, I have to use 0.26 or smaller tubing on one side of my pack.
So that will be good anyway to see, just got my goodwinds stuff, skyshark too, but that's 4x more per tube than the link you posted.
I'm actually curious to see if the 0.25 or so stuff will work, it's very light and thin. I also got 0.28 to see how that is, plus some 0.29 stuff I got from our local Tap plastics, which is a lot heavier and probably not as strong, but still pretty light relatively speaking.
0.385 sounds like it would be interesting for something more like an external frame type pack though, but those prices might just be too low to resist.
I'll watch this site in the future, good to know there's some deals on this carbon tubing, it's really not cheap to get it at list prices, easily becomes the single most expensive part of the pack.