Looking for some opinions here,

I have an under seat bag where I keep a CO2 can, valve, tyre level, a multi tool, and I shove my phone in there too. I want to get rid of the bag for aesthetic reasons and I can put everything in it in my jersey pockets. I don't really want to do that with my phone because I'll sweat and it'll develop condensation. Any ideas on this would be very much appreciated.