If front trunk bags get to play, in it, I'm hauling a fold-up tire, 2 oz. Stans, pressure gauge, chain tool, leftover chain piece and 2 quick-links, a rag, saddle cover, and still small room for sundries.
The tool roll on my saddle bag carries 2 tubes and a tool for every fastener on the bike, including peanut butter wrench and valve core tool.

The MUT bag strapped on my rear rack will carry a 25 oz thermos, and between it, 2 cages, and an added bar bottle bag, I can carry 100 oz water. I've sweated that much on summer rides in the TX hill country.

Each of my bikes carries the full compliment mentioned above in different ways - on my drop-bar road bike, all my roadside (fold-up tire, 2 tubes, Stans, chain stuff, tools, pressure gauge) is in a roll-top saddle wedge bag.


Each bike also has an added front bag or a larger front bag for carrying winter/weather layers.

e.g., this 7-liter saddle bag carries all roadside with room for sundries, and I put on the front trunk bag in winter for weather layers.