Mullim
Found this on 'Richards ST2 Page'
http://home.houston.rr.com/rcee/ducati/bag.html It's a bag to fit inside the side pouches to stop stuff rolling about or falling through the gaps. I don't know if they make one for both sides, it's only the LHS pouch that's got any real room on an ST2 because the remote shock reservoir lives on the RHS so it's a bit restricted. On a 4s that gubbins is mounted alongside the shock isn't it? Might have yet more room.
If I wanted one of these things I think I'd go and get some ripstop nylon or similar and withold the nuptials from the wife until she sewed one up for me - could be waiting a few years then
[Edited on 30-5-2003 by Jools]