In the location's words:

At the RAW flea market you will find a colorful mix of everything your heart desires. The large selection of fashion is particularly popular. From vintage and retro to "I've never worn that" - you'll find everything at the flea market.
Want to try it on? No problem. Toilets are available on the premises and can sometimes be used as changing rooms.
In addition to curiosities and useful items from mainly private traders, you will also find local artists offering their handicrafts, jewelry and paintings every week.