Starfleet uniform (2366-2373)

In January 2366, this uniform was made into a more-bearable two-piece jumper and trousers style (TNG episode Evolution). This was kept intact through 2368, when a variant in almost total black was introduced to be used alongside it (TNG episode The First Duty). In 2369, a third variant, with a more open neck area was added as well (DS9 episode Emissary).