From the accounts I've read from abductee stories, is that the Greys don't wear armor like we do (and from our past styles) and/or reptilians. They seem to wear suits. Extremely simple. Though some have been reported wearing some type of militaristic clothing. But that's rare.

Also seeing as Greys don't have a physiology like humans do, they pretty much have the same body type. Until they speak to you telepathically or one feels their energy, they can determine if they have a male or female personality.

So I decided to take a little creative approach by adding just a little bit of extra protection. I didn't go the medieval or Romanesque style of armor seeing that wouldn't fit the profile of the greys fashion wear.

However, recently I felt that it was a bit too empty. In the updated design, I added a few more additions but nothing too huge, seeing as many ET Armors (as I would suspect) are light yet extremely powerful and durable. Would make ours seem like plywood haha

For other classes I'm not sure how I might make a single armor set for both genders. Especially for other classes that might be even LESS, like some cryptozoological beasts. I wouldn't suspect they would need armor, but maybe something extremely simple like cuffs or something.