I recently received my Synapse 25 in Steel Dyneema/Wasabi, and I've been quite pleased with the quality and organization of the pockets. Most backpacks, when stuffed full, effectively lose the usage of their smaller/outside pockets; as I found when I test-packed my Synapse, there is no such problem here.
However, I've been a bit confused about how to use the elastic pocket inside the main compartment. You can see it here:
I've seen something like this before, but it was on the back of the backpack and intended for use with a hydration reservoir. In the Synapse, it is in the front...any ideas?