For most rides, I carry just CO2 with 2 cartridges for my road bike, and 3 for MTB or gravel bike. For longer MTB or gravel rides I have a mini hand pump in my hydration pack as an emergency backup.
__________________
RIP 01/08/25...2022 Trek Supercaliber, 2018 Storck Fascenario.3 Platinum, 2018 Trek Procaliber SL Singlespeed, 2017 Bear BR1, 2003 Time VX Special Pro, 2001 Colnago VIP, 1999 Trek 9900 singlespeed, 1977 Nishiki ONP