With this season of Lost viewers will be treated to some of the Island back-story, including the Dharma Initiative.
ABC has obliged fans with providing Official Dharma jumpsuits, as seen in the show. Only the "main logo" patch seems to be available currently, but enterprising fans know where to get the various others.
The jumpsuit is not exactly like the ones seen on the show, but given the different variations seen, it is close enough for most fans.
It is nice to see big networks understanding that fans don't necessarily want trinkets with the show name on it, we want replica items from the world the show is from.
[ABC Store Jumpsuit]