Though I have WAHMIES wet bag, I still resort to simpler & practical wetbags by NCB. Available in Mandarin, Vanilla, Kiwi, Blackberry but I only got myself yellow & kiwi. It has elasticized cord with toggle. Size wise, it is considerably small (holds up to 5 diapers).
Cleaning it is easy, just throw in the washing machine.
Got it from http://www.mybabypitstop.com/ for RM25