no use one lah. that thing not only makes ur car look ugly (some
factory OEM ones are ok though), but those who put it will end up
with dings and dents on their cars anyway. all it takes is for a
van/ lorry park beside u and the driver "boh chup" swing the door
open u kena liaoz. the safest way is still to park ur car in ur own
personal garage and dun drive 
but if u muz know, places like autobacs and stamford tires should
sell. 