The Alpine MultiCam Pattern is back in stock for the 25 liter Default Bag. The fabric is a laminate of 500 denier Cordura nylon, and a rip-stop sailcloth.
This combines the abrasion resistance of the nylon, with the structure of the sailcloth for a well rounded bag.
From front to back--
MultiCam Alpine 500d/XPAC
MultiCam 1000D Cordura
MutiCam Black 500D Cordura