I have the simple backpack from Saddleback and it is without a doubt bifl. I don’t know about this particular line. The backpack I have is pretty heavy and not super comfortable for long periods of time like hiking or biking, but walking across a college campus from class to class it was great.

ETA - I have a few other items that are also great. The only item I own that I don’t think will last is their leather bifold wallet (I believe it’s been discontinued).