I've yet to figure it out, but Indonesians like to wear their hotel slippers out. This photo is out in front of one of the malls (where there is a hotel attached, but the slippers aren't from that hotel?). Odd.
On an related note, the one thing that I really want here is a decent pair of slippers. But thankfully, my friend gave me a pair of (thicker) hotel slippers that are making due for the time being. Their a one-size-fits large, so I tend to drag them across the floor when I walk. I'm going to load up the girls' luggage when they come to visit in the summer! Slippers, cereal, sheets, trail mix. I've started a list!