I carry everything except the kitchen sink because I ride alone in rural areas with no cell service.
Two tubes
Patch kit
Duct tape on a section of pencil
Zip ties
Three 16g Co2 cartridges
Inflation head
Tire levers x 2
Multi tool w chain breaker
Quick link
3,4,5 & 6 regular allens
Rubber gloves
Hand sanitizer
20 dollar bill
Two derailleur pulley wheels & bolts (out of spite for having lost one earlier this year on a ride)
Bead jack strapped on the outside
I don't know what it weighs and don't care because it isn't the difference between what I am now and what I was 30+ years ago.