hello, i'm going to backpack from jakarta to bali later this month.

few questions here...
can i buy a large backpack (eg deuter or karimor) at bandung before continue our journey?
besides clothing, is there any shops selling sports shoes? (adidas or nike)
how about perfume? selling in bandung?

hope u all can help me since i'm planning of bringing only small backpack from lcct to jakarta,limited to a few pairs of clothes only.
plus my camera and laptop