Pioneer Carry Duration Backpack (Version 1, 18L)
I have almost every bag that Pioneer Carry has made and think they are some of the best quality bags in the market. This is the first version of the duration pack, but I've owned both, and in my opinion there's not a huge difference. Technically, this is smaller at 18 L but has most of the same features. The fabric is a proprietary nylon that they call Mandarin.