Starfleet uniform (late 2360s-early 2370s)

In the late 2360s, the Starfleet uniform was changed from the previous design, mainly switching the division color to the shoulders.

The next major redesign occurred in 2373. However, this uniform continued to be used until 2378 on the USS Voyager, due to the ship being trapped in the Delta Quadrant. 

Standard duty uniform
By the year 2369, Starfleet had introduced a new standard duty uniform, a less formal uniform than the previous version which reversed the familiar two-tone arrangement of black over department colors from the previous uniform style. The combadge was updated around this time with the new Starfleet insignia, although some flag officer uniforms still used the previous design.

The new uniform was a loose-fitting, two-piece black jumpsuit with division color on the shoulders, usually worn with an open collar over a blue-gray mock-turtleneck shirt. Under the uniform jacket and shirt was an undershirt with the same blue-gray of the mock turtleneck. Comparable to a utility jumpsuit, the uniform was first used aboard space stations before eventually coming into service aboard starships in 2371.

Despite being worn in conjunction with the more formal duty uniform, the new variant eventually came into exclusive use aboard starships before its retirement in 2373. 

Engineer's Overcoat
B'Elanna Torres wore a functional overcoat over her traditional uniform. It mirrored the uniform design, with gold shoulder coloring. As well as adding an additional layer for protection, it provided small pockets for tools. (VOY Season 4)

Maternity uniform
Maternity versions of the uniforms were also available, consisting of a uniform top that, instead of being tucked in as on the standard uniform, flared out below the waist. 

Uniform undershirt
This uniform was worn with two layers of shirts under the uniform jacket. The first layer was the long sleeve blue-gray color mock-turtleneck upon which the wearers rank insignia was worn. This shirt was visible when the jacket was worn, and beneath this was either a female or male undershirt of the same blue-gray color.

There were two versions of undershirts available. A sleeveless undershirt that was tucked into the uniform pants just below the breast, but lower than the previous undershirt. This undershirt also had a lower neckline with less material used on the shoulders when compared to the previous version. A short sleeved tee was also used, tucked into the pants at the waistline. This style was worn by both sexes. 

Flag officer uniform
The last version of the flag officer uniform from the previous style was retained while these uniforms were in use. These uniforms were retired in 2374 for the next design. 

Dress uniform
The dress uniform style from the previous uniform was retained while this uniform was in use. This uniform style was used by Starfleet until its retirement in 2374, though officers aboard the USS Voyager used it (though sparingly) throughout their mission in the Delta Quadrant. 

Combat jacket
For situations that called for a Starfleet officer to serve in hazardous battle operations, a ground combat jacket was available by 2373.

Made of a harder, more durable substance than standard uniforms, the combat jacket was worn like body armor over the standard duty uniform.

Consisting of a black, textured material, the uniform's only distinguishing feature was a thick line of division color running across the yoke. 

Excursion uniform
Available to officers serving aboard starships as early as 2371, gray jumpsuits were worn during certain away missions if conditions warranted. In 2373, officers from the starship Voyager wore these gray uniforms on a rock climbing excursion on an alien planet.

Marked by a stripe of division color across the chest, these jumpsuits were tight-fitting and trimmed in a metallic-silver material. Allowing for more taxing physical activity, these uniforms were worn with specialized boots with treads better suited to mountainous or more rugged terrain. 

Uniforms similar to these were worn beneath environmental suits. 

Training uniform
Similar in make to the excursion-type uniforms in use aboard starships in the 2370s, the training uniform was a gray, short-sleeved jumpsuit worn with specialized boots bearing enhanced treads. The uniform style lacked any rank insignia, noticeably in the collar area as the jumpsuit had an open neck. Female styles had a lower, but narrower open neck than their male counterparts.

These uniforms were used in situations in which increased physical activity warranted something less confining and more flexible than the standard duty uniform.

Marked by a strip of division color running across the chest and down the sleeves, these uniforms had low collars and were tight-fitting. 

Flight suit
During their participation in the Antarian Trans-stellar Rally in 2377, USS Voyager officers Tom Paris, B'Elanna Torres and Harry Kim donned special flight suits.

Consisting of sleek, tight-fitting jumpsuits, the flight suits were black and gray with stark white shoulders and red trim. The uniforms featured high collars and distinctive closures running down the front. 

Scrubs
During surgical sessions, scrubs were provided to doctors in a blue-gray in color. These scrubs were worn by medical personnel in battlefield hospitals. 

Patient attire
Patients wore a plain blue garment while receiving care in battlefield hospitals. 

Cadet uniform
By the early-2370s, the Starfleet cadet uniform was modified to keep it distinct from the standard duty uniform.

Retaining the same basic shape and style of the previous design, the new uniform was now gray with division color shoulders. With this modification, all visible rank insignia was also removed.

While this uniform saw use through 2374, a new cadet uniform was introduced to some cadets as early as 2372. 

Other features
Depending on their various circumstances and traditions, some Starfleet officers were allowed to augment their uniforms with the addition of cultural items.

Klingon Starfleet officer Worf wore a baldric displaying various family emblems throughout his tenure in Starfleet. 

Ferengi cadet Nog wore a headdress traditional among his people. 

Scientists sometimes also adorned their Starfleet uniforms differently than other officers, wearing lab coats over their standard uniforms. 

Appearances

 * Season 1 (all episodes)
 * Season 2 (all episodes)
 * Season 3 (all episodes)
 * Season 4 (all episodes)
 * (photograph only)
 * (flashback only)
 * Star Trek: Voyager (all episodes)
 * Films
 * (photograph only)
 * (flashback only)
 * Star Trek: Voyager (all episodes)
 * Films
 * (photograph only)
 * (flashback only)
 * Star Trek: Voyager (all episodes)
 * Films
 * (photograph only)
 * (flashback only)
 * Star Trek: Voyager (all episodes)
 * Films
 * (flashback only)
 * Star Trek: Voyager (all episodes)
 * Films

Background information
The Starfleet uniforms introduced in the 2360s and '70s were designed by TNG, DS9 and VOY veteran costume designer Robert Blackman, based upon William Ware Theiss's designs from The Original Series and Star Trek: The Next Generation.