i have 2 a tarrget $40 one which is big and good.
Also OiOi herrignbone hobo charcoal tweed.

I love my oioi but doesnt hold as much due to shape but fits enough if u dont put wallet etc in it also.

I have 2 changes of clothes 4 nappies, wipes, nappy sacks, change mat, ds jumper and a blanket