Lightweight and easy to handle. I work at home doing live and recorded training webinars. I wanted to cut down on the echoes from the vaulted ceilings in my office, so I applied 12 of these to the wall in front of my desk and it worked great. I didn't want them to be permanent, so I attached them with 2 push pins each, one in each of the upper corners to cover an area 5 tiles wide by 3 tiles high.
