The vast majority of Central Command personnel under the rank of legate wore the same type of uniform. The uniform featured a heavy, triangular chest piece, as well as padded armor on the lower arms and the outside of the legs.
Standard elements of the uniform included a disruptor pistolholster and a wristcommunicator. A division strip on the right side of the chest displayed information on the affiliation of the individual.
The "division strip" gets its name from the It's A Wrap! sale and auction. It was attached to the chest piece with Velcro, so the same uniform could be used to display different strips.  The exact nature of what the strips represented is not known.
These uniforms were created out of necessity, due to the complicated design of the "Type B" uniform and the foreseen heavy recurrence of the Cardassian uniform. (Star Trek: Deep Space Nine Companion (p. 138)
The legates of the Central Command, the highest ranks within the organization, could opt to wear a more decorated variant of the standard uniform. While still very utilitarian, Legates could be identified by the seal they wore of the Cardassian Union on the left of their breastplate.
While not typical, the breastplate could be accentuated with silver white lining on the chest with a more elaborate division strip on the right side, as was worn by Legate Parn. (DS9: "The Maquis, Part II")
These uniforms could also be worn with a belted holster and wrist communicator.
Damar's costume was sold as part of the It's A Wrap! sale and auction. For the auction, it was described as follows: "The costume top is made of cast latex to be worn over a Spandex jumpsuit with stirrups that go inside rubber boots which include cast latex gaiters. Also included is a cast holster for a Cardassian disruptor pistol on a belt that fastens at the waste and around the thigh. Additionally a metal and resin "Legate" badge is included to fasten on the latex top as well as a cast "wrist communicator" that attaches via Velcro." 
The bodysuit worn under the chest piece was also sold as part of It's A Wrap! sale and auction, and was described as "a dark-grey, long-sleeved jacket featuring multiple sites of black piping, ribbing under the collar, down the ribs, and along most of the sleeve. Included are matching overall-style trousers with similar ribbing down the leg, stirrups for the feet, and a corresponding, molded rubber holster and belt." It also noted that "Most Cardassian uniform costumes consist of material sewn over neoprene; this costume is rare in that it consists merely of more sturdy, moderately metallic material." 
This uniform design featured heavily padded armor all over the body, and included gloves and a lightweight dress helmet. These uniforms displayed several insignia denoting unspecified intent. (TNG: "The Wounded", "Ensign Ro")
With the introduction of a new recurring species in "The Wounded", costume designer Robert Blackman and makeup designer Michael Westmore together devised the overall "snakelike" look for the Cardassians. According to Blackman, "I designed a reptilian rubber suit for him that included a bateau neckline that followed the cure of his collarbones to the ends of his shoulders in order to accommodate those amazing elongated side neck pieces that Michael had come up with. The suit was extremely labor intensive, with a kind of jigsaw-puzzle understructure made out of slightly rigid, flexable foam." He continued, "We covered probably ninety-three percent of each character's body in this foam, and then covered it with a very expensive polyester that looks like leather. I think there were three hundred and eleven pieces of foam that had to be glued together to do one suit." Due to the nature of the design, casting was limited to actors that "had to be like Marc Alaimo, who is an amazing fellow with zero percent body fat." (Star Trek: The Next Generation Companion (2nd ed., p. 153); Star Trek: Deep Space Nine Companion (p. 137); Star Trek: Costumes: Five Decades of Fashion from the Final Frontier (p. 200))
According to the script, this attire was described as a "uniform that seems neither fully civilian nor military, but some mixture of both."
Two of these costumes were sold as part It's A Wrap! sale and auction. The first auction description stated that "[t]he jacket is made of neoprene with navy blue ribbed fabric covering the arms and torso. On the front and back are 'V' formations made of navy suede with quilted centers. There is a zip up the back. The corresponding trousers are navy blue."  While the second auction description stated that this costume, worn by a stunt double, "is long-sleeved, neoprene-lined, dark-blue jacket with a textured, several triangular accents on the chest, the innermost featuring a lighter, iridescent pattern, a zip down the back, matching, overall-style trousers, and stirrups for the feet." 
These guard uniforms were less heavily built uniform than the military, and lacked a chest piece. Instead, the guard uniform consisted of a grey jumpsuit with padded sections along the legs and torso. The uniform also included gauntlets that protect the lower arms and wrists.
Both of these uniforms only appeared in "Tribunal" and were sold as part of It's A Wrap! sale and auction. The first auction description stated that it was "made up of a gray jumpsuit with black dot accents and ribbing running from the arms down the legs. Also included is a pair of gaiters made from rubber with a gray rubber covering to match the costume for 'alienizing' boots."  While the second auction description stated that the uniform is a "gray vinyl jumpsuit [that] has pleats up the sides and small checks on the sleeves and upper torso. [..] Worn around the forearms are gray covered neoprene gauntlets."