Tube, 2xCO2, small inflater, plastic lightweight tire levers, patch kit in the ultra small Fizik bag. In my jersey I carry wet ones single, drivers license, $10, cell phone, energy bar or gel pack or gel shots, Assos climaJet vest if it is very likely to rain. Since I found out that Viagra is/will be banned for doping, I take 1 Viagra with me in case I need to dilate my blood vessels to go even faster.