Under the hot June sun last Friday, Indah Pertiwi walked down the crowded streets of Central Jakarta's Senen Market. The student of a private university in Grogol seemed unaffected by the polluted, hot air and swiftly walked amidst a legion of market goers to visit dozens of stalls selling second-hand clothes.

In flat shoes and jeans, Indah carefully observed the array of clothes displayed on hangers or piled on the market floor.

"We have to be m