The fabric is thick and heavy, well-sewn and without defects. The white substance has neither stains nor any disturbing elements. They are washable, which provides an enormous advantage, because they can also be used outdoors then.
Density is OK. Habs hanging in front of a wall.
Conclusion: For a beginner studio with a small budget but also for a professional who "fast times" what needs it is ok. Ironing you always have, is just fabric.