I can't list all the things that are in my bag... and, I don't know exactly what I carry. It's really heavy though. Any time that I have needed something, I've been able to find it in there. I'm sure I have way more than I need. During the winter, I add a second pannier that is filled with clothing (rain gear, different thicknesses of layering.) Most of my commuting is done on an e-bike, thus, I don't concern myself with the weight of what I carry in my pannier(s).