Your Questions

Yes, the Protection Pocket is at the rear bottom of the backpack.
The Protection Pocket is isolated from the rest of the compartments of the backpack.
The largest laptop our Large Freedom Backpack will hold in the designated computer compartment is a 17" laptop. Our XL Freedom Backpack will hold an 18" laptop.
Our Large Backpack has an optional ballistic panel insert that can be added.
It is soft armor, NIJ IIIA rated.
Our Freedom Backpacks are made from Ripstop Nylon.