So say for instance you just want a bare bones system, you can remove the adrv and get a small 180mb puppy. it can go even smaller if you use tahrpups firmware in the fdrv to something nearing 150mb.
Great feature if you have expertise in acquiring app dependencies. Not much works without. Typing this now in Pale Moon. Firefox wants more gtk libraries at least -- reminds me of Slackware. I know Chromium browsers would expect more as well. Still,
main, z, & fdrv .sfs total 163mb!