To add to TGT1's reply:
1. Mini-pump or CO2 inflater(sp) with 1-2 spare cartridges.
2. Spare tube --or--
2. patches, glue-less or glued/with adhesive. (I have both, I really hate to push and walk)
3. nested tire tools and or a multi-tool (Park Tool IB-3 is my personal choice)
These will easily fit in my under-seat wedge bag.
Bill
__________________
Semper Fi, USMC, 1975-1977
I Can Do All Things Through Him, Who Gives Me Strength. Philippians 4:13