My BOB is a SOC backpack i bought back in '02 on my way home from LAFB for the last time. I think i paid $50 at the BX for it ?
Nice comfy shoulder pads and a kidney belt and built in "frame" to help with the heavy loads. Also has a pocket for a hydration bladder. Molle webbing on the front and d-rings all over to hook stuff to.
Mine is a little different from the current design from what i gather from the pictures, but the only real difference i see is that the new ones don't have the mesh "blackout" pocket for your name tapes.