It is constructed similar to the Airborne "US" uniform, however the jacket lacks the lower sleeve pocket and right sleeve pocket (only one sleeve pocket). It also lacks the poachers pocket with two zippered openings. There are remains of red and blue thread on the sleeve pocket from some sort of insignia.
The trousers are the same as the 4 cargo pocket Airborne "US" trousers, and have the knife pocket on the right side.
Neither items have any stamps, or if they did, they are washed out. Just the pictured tags. It looks post-communist era, and I've seen commercial factory tags like these on other legitimate trial pieces, so that does not mean it is just a commercial item. The size tags are standard official type used from 1980s to early 1990s.
Anyone have anymore details of what this interesting uniform is?
Right side of trousers, note 4 cargo pockets and knife pocket between the cargo pockets:
Name tag on reverse of collar: