I have been wondering what 3D mesh was, I see it used in your shoulder straps.
The project is slowly coming along. Using Dyneema gridstop, spandura and a bit of SiNylon for internal pockets. Hip belt is done using sleeping pad foam with side pockets, and the back panel is done, I used sleeping pad foam and scholer material to make it, it came out awesome.. Next biggie is the shoulder straps.
Its going to be pretty sweet, like a cross between a Ula and my Dana Bomb pack, but much much lighter.
I'll post pics when its all together.. hopefully soon so I can have my life back.