Starfleet uniform ( 2350s - 2370s ) In the early 2350s , the Starfleet uniform was completely redesigned . Closer in appearance to those in service during the late 2260s , the new Starfleet uniform spawned several variants , most notably in 2366 , and inspired versions yet to come . The next major redesign came in the late 2360s and was used in conjunction with this design for a few years before both styles were completely phased out . Standard duty uniform . Type A . Introduced as early as 2353 , the standard Starfleet duty uniform in use aboard Starfleet starship s , at starbase s , and at Starfleet Headquarters on Earth , consisted of form - fitting jumpsuits , primarily black but prominently displaying the wearers ' division of service . ( ) As with earlier Starfleet uniforms , the divisions were distinguished by color , with red for command , gold for operations , and blue for sciences , but switching the command and operation division colors from the earlier uniform designs , with the colors shown on the chest , back and sleeves , as well as in piping along the shoulders , collar , and pant cuffs . Worn with a Starfleet insignia combadge on the left breast , this uniform also displayed rank insignia – in the form of round pip s – below the collar on the right side . Closing at the front , the Starfleet uniform was adaptable for away team missions , including areas to attach phaser s , tricorder s or other equipment . While most officers wore the single - piece duty uniform , variants were available , such as the " skant " and medical skant versions . While an updated version of this uniform was introduced in 2366 , the 2350s variation remained in service , usually for lower - ranking personnel . This 2350s uniform disappeared from common use between 2367 and 2370 . ( , , ; ) Skant . Introduced alongside the standard duty uniform jumpsuit , a skirt or " skant " - style uniform was also available to Starfleet officers as early as 2364 . Similar to its jumpsuit counterpart , the skant uniform was a short - sleeved dress , that could be worn with or without trousers , and included knee high , or shorter , black boots . It was worn by all genders – though men tended to wear the shorter boots – until it was phased out of service in late 2365 . ( ) Transitional versions . A transitional version , between the Type A and Type B , of the uniform , introduced in early 2366 , was designed with two vertical seams down the front of the jacket and in the underarm areas to create a more tailored look . The male design lacked the waistband found in the final Type B jacket revision . ( ) The uniforms were gradually phased out over a few months . ( ) In 2367 , one junior officer wore an unusual hybrid of the two primary uniform designs : a Type A one - piece uniform with division - colored shoulder and ankle piping , but featuring the Type B collar with neckline piping . ( ) Type B . Beginning in the year 2366 , a new uniform variation was introduced to officers serving in Starfleet . Retaining the same , distinct two - tone style as before , the newer version featured a higher , more formal collar . Division color piping was relocated from the yoke to the top of the collar , leaving a flat black look . The combadge remained on the left breast . Division colors were retained , with wine - red for command / helm , mustard - yellow for operations / security , and teal - blue for science / medical . Uniforms also came with a division color undershirt , beneath the uniform jacket , that was tucked into the pants just below the breast . ( ) This alteration to the standard duty uniform was introduced to senior officers only at first , but was ultimately trickled down to lower - ranking crewmembers by 2368 . Still , while all officers aboard starship s wore the same basic uniform , senior officers and department heads generally wore the belted version while other crew members wore the tighter non - belted versions . Officers continued to wear this style uniform , even after the introduction of the next uniform redesign , which at first was used only aboard starbase s . Still , while the two uniforms were worn in service together ( giving officers aboard ship a greater choice of wardrobe ) , the more formal duty uniform fell out of use aboard starships by 2371 . It continued to see use by officers serving at Starfleet Command on Earth or in other diplomatic service as late as 2374 . ( ; ; ) Captain ' s variant . In the year 2368 , Starfleet had a uniform variant jacket made available to commanding officers in service aboard starships . ( ) Maternity uniform . This appears to be a looser - fitting uniform designed to better accommodate the growth of a crew member while pregnant . ( ) Uniform undershirt . The Type B uniform had a sleeveless undershirt , in the wearer ' s division color , worn beneath the uniform jacket and tucked into the uniform pants just below the breast . ( ) Flag officer uniform . Type A . Sometime before 2358 , this uniform was available to Starfleet flag officer s . This uniform consisted of a double breasted jacket that could presumably be opened like the jacket on the previous style could , along with a featureless black belt , pants , and boots . The jacket opening was trimmed in gold , as were the black shoulders and large black cuffs . Gold trim also ran down the back in the same manner that black piping had ran down the back of the previous uniform style . Rank insignia was worn on the right shoulder just above the trim halfway between the jacket opening and the center of the collar , as well as on the cuffs . ( ) Type B . Available to Starfleet admirals and other higher - ranking flag officers as early as 2364 , this uniform variant featured a design distinguishing it from the standard duty uniform . Consisting of a short , burgundy and black tunic , with black trousers , this uniform featured gold braid at the yoke , shoulders and collar . It was also marked by a distinct wedge of black material extending from the right shoulder down to the left waist . ( ) Type C . As early as 2365 , another admiral ' s service uniform was available . Consisting of a short tunic top , with gold braid and yoke piping , the uniform was worn with black trousers . The uniform rank insignia was displayed as a box - shaped insignia with pips inside , on either side of a high collar . ( ) Type D . With the alteration of the standard duty uniform in the 2366 , a new wave of uniforms for flag officers and admiral s came into service . This alteration featured a long service jacket and trousers . Similar to the standard duty jacket , the flag officer ' s uniform was marked by a V - shaped black cutout , trimmed in gold . The rank insignia were enclosed pips worn on either side of the uniform collar , as well as displayed on both sleeves with four widely spaced , thin gold braid stripes ending at the cuff . ( ) Type E . In 2369 , a new flag officer ' s uniform was introduced . Retaining the familiar long jacket and trousers , this newer version was simpler , abandoning the distinctive black wedge cutout from the previous design for a gold - trimmed closure running down the front of the uniform . The sleeves of the uniform were also modified , now bearing the rank insignia within a wide , black cuff . This version was ultimately retired from service in the year 2374 in favor of yet another design . ( ; ) Dress uniform . Type A . In the early 2360s , Starfleet personnel were issued a standard dress uniform that had a long wraparound tunic top worn with black leggings . An officer ' s standard rank insignia were not worn , instead a band of gold braid ran the entire length of the jacket closure . ( ) An Admiral ' s version of this uniform also existed , which was worn in the same style except for the gold braid which was much thicker . Q once wore this uniform upon his second encounter with the crew of the . ( ) Type B . Introduced in 2365 , this version of the dress uniform introduced rank insignia to the right shoulder and swapped the single gold braid for two narrower braids running parallel to each other ( one gold , one silver ) , which together were the same thickness as the original . The gold braids also no longer extended below the black material that covered the shoulders from the yoke upwards . By 2366 , the leggings had given way to a more standard black pants and boots . ( ) Type C . In 2367 the dress uniform was again modified , this time removing several inches of material at the bottom , bringing the bottom of the jacket to mid - thigh just below the hands . A small section of the gold trim that ran vertical from the end of the top opening to the yoke was also removed , leaving only the trim above the rank insignia that ran around the collar . ( ) Type D . By 2370 , the dress uniform jacket had again been shortened , this time just removing enough material to bring the bottom to the hands , just below the waist . This uniform style was used by Starfleet until its retirement in 2374 , though officers aboard the used it throughout their mission in the Delta Quadrant ending in 2378 . ( ; ; ) Medical attire . Starfleet medical personnel generally wore standard duty uniforms . In some situations , officers like Chief Medical Officer Beverly Crusher of the starship wore medical lab coat s over their sciences division uniform . ( ) Medical skant . A variant of the Type A standard duty uniform available to medical personnel . This uniform featured a tunic with a cut similar to that of the Skant style uniform , but apart from black shoulders , was completely medical - division blue . This tunic was worn untucked over separate black trousers , and standard duty boots . The initial design of this uniform featured two front pockets and a raised band in the midsection ; these elements were later eliminated from the uniform . ( ) CMO Dr . Katherine Pulaski appeared to prefer this uniform to the Type A duty jumpsuit . ( season 2 ) Scrubs . During surgical sessions , scrubs were provided to doctors , consisting of burgundy - colored gowns and caps . Medical personnel also wore rubber - like surgical gloves during more intensive medical procedures and surgeries . ( ; ) Utility uniform . The mid - 24th century uniform issue included a utility jumpsuit for technical personnel . The jumpsuit , in the three standard department colors , was worn over a black , long sleeve mock turtleneck , although some versions had a short black collar built in , and was worn with black boots . Another variation had division - color boots and black sleeves . Personnel wearing utility jumpsuits were sometimes issued combadge s . ( , , , , , , , , , , , , , , ) Covert Ops attire . In certain instances of covert operations or espionage , Starfleet officers were afforded specific attire to aid in the completion of their mission . As early as 2369 , some officers wore a black , tight - fitting jumpsuit uniform , not marked with an insignia or any kind of outwardly identifying marks . Distinguished by an optional jumpsuit hood and black boots , this uniform was sometimes worn with a backpack and technical gear for grappelling or other physically daunting tasks . ( ) Cadet uniform . During the late - 2360s , Starfleet cadet s at Starfleet Academy wore distinct duty uniforms consisting of a black two piece jumpsuit with division - colored shoulders resembling the next uniform design . Originally , the cadet uniform maintained the low collar of the original uniform design , trimmed in black , and had no rank insignia . Two years later , the cadet uniform featured a high collar , with rank ( or student year ) insignia being added shortly thereafter . Both versions of the cadet uniform bore several large pockets running down the trousers . ( ) This uniform was in use aboard Terrasphere 8 , Species 8472 ' s recreation of Starfleet Headquarters and the Academy in San Francisco , in 2375 alongside the next version of the standard duty uniform . ( ) Provisional uniform . The provisional uniform was worn by crewmen such as acting ensign s . There have been two variations of this uniform ; the first had a light blue turtleneck tunic with navy blue shoulders and collar bordered with the colors of all three divisions . The blue division stripe crossed over the others to form an upward - pointing arrow on the left shoulder , while the red division stripe crossed under to point down . The uniform ' s navy blue pants matched the shoulders . The second variation was a heathered battleship grey turtleneck with matching trousers and dark charcoal gray ribbed shoulders and collar . The first variation was worn with no combadge ; the second worn with an entirely silver - colored combadge . Terraforming uniform . A utility uniform worn by terraforming scientists , consisting of a pale green jumpsuit with snap - up flap , a dark green belt , and dark boots . The uniform was worn by both men and women . ( ) However given the degree of isolation and lack of overall supervision at distant terraforming sites , this outfit may simply be a simple mass produced utility outfit rather than mandatory uniform ; it ' s highly unlikely the Federation would concern with a dress code for non Starfleet personnel . Starbase technician uniform . This two - layered uniform , worn by both male and female starbase technicians in 2365 , consisted of a gold , sleeveless jumpsuit worn over a navy blue shirt . ( ) Civilian uniform . This uniform was worn by Federation civilians working with Starfleet in the 2360s . ( ) Other uniform features . Some officers wore alternate uniforms at times . Deanna Troi often wore casual clothing while on duty . Other officers , such as Worf , were allowed to wear accessories relating to their culture with their uniforms , but this was at the discretion of the captain . Bajoran officer Ensign Ro Laren was allowed to retain her culture ' s traditional earring , despite the reservations of some of her fellow officers ( ) , and once wore a headband the same color as her division . ( ) Benzite officer Mendon , participating in the Officer Exchange Program wore a uniform variant with a more built - up collar . It is unknown if this was in some way related to the breathing apparatus attached to his chest . Rank insignia . The rank insignia was also simplified from differently - shaped symbols to smaller circular pips , either in gold or black ( to signify partial rank ) . Appendices . Background information . The Starfleet uniforms worn during were designed by William Ware Theiss , who returned to design the uniforms ( which were further adapted into future versions on DS9 , VOY and the TNG - era films by Robert Blackman ) . Patrick Stewart claimed that the change from this Starfleet uniform to the new version after the second season of TNG was thanks to his chiropractor , who recommended Stewart sue Paramount for " lasting damage done to [ his ] spine . " Evidently , the producers wanted to have a smooth , unwrinkled look to the Starfleet uniforms , which put strain on Stewart ' s shoulders , neck and back after two seasons in a lycra costume that was one size too small . Among the costumes and uniforms which were sold off on the It ' s A Wrap ! sale and auction on eBay , was an operations division uniform from this era . Appearances . Type A Type B Skant uniform Utility uniform