I be not a biker but buy the bag anyways , because I need a cool , handy bag to carry my PowerBook , PDA and load of other stash .  i find it very cool indeed and pleased that my PowerBook fit snugly inside . -lrb- at time I wonder if it be design for the PowerBook -rrb-  my only qualm be that the awkard top bit of the flap fold up when u carry it . I be sure that there could be a workaround .  other than that , I love the bag . it be brilliant and it be get Amazon.com on it ! yippeeee !