The Woffman fender bag has 100' of rope in it. Which I needed last Sunday. Note to self --- trying to jump a log laying at a 45* angle on a steep hillside is a bad idea. The skid plate hit the high side of the log and sent me over the hill.
I had a plastic oil bottle full of fuel in the Woffman but sometimes ended up sitting on it and feared it would pop open.
The dirty white wedge is a seat of good foam I use for kayak seats. It is just on with Velcro. Actualy very comfortable and the subframe takes my weight fine. Just enough to give your legs a break on the easy section. I did 30 miles of hard trail with 2 liters in my backpack. I'm getting 6 miles per liter.
The little handlebar pack just has a rain jacket. No weight. I have given it up as it just gets in the way for as little storage...