Flak sack II & replacement drawstring rope
It's awesome bag, I enjoyed using it without worries.
Ropes are great.
I love my bag and as I used it a lot I had to buy replacement ropes. Ordering was easy. Unfortunately due to new rules in shipping to NL I ended up paying almost twice as much as I would have if vat was handled by Loctote.
A little spice is nice
I changed out the standard black ropes with bright yellow. While black is nice, adding a little color is a good thing. Easy to change and makes an instant kick.