My husband and I both have the Bell Metro (seems to be called the Metropolis now, but it's the same thing), which is just a fancier version of the Citi ... it does come in multiple sizes and it has some accessories that don't work with the Citi (or didn't at the time we were shopping, a couple of years ago). But the accessories have mostly been crap so I wouldn't recommend buying the Metro for that reason alone ... the rain hood broke the first time we tried to use it because the snaps were super low quality, the helmet mirror falls off when you go over a bump, and the specific blinkie light that is supposed to work with this helmet has been discontinued, so we just use a regular old blinkie that would work with any helmet, probably.

But I do like the helmet a lot. Mine is sparkly red, and I am a big fan of sparkly red although of course yellow would be more visible.

My husband complains about poor ventilation, though. It gets very hot here in the summer and he usually winds up using his roadie Giro for his commute if the temp is over 100, because otherwise he's just too hot.