Using this on recommended commercial carpet without padding but it's not thick enough to maintain a level rolling surface. Probably OK for super-thin carpet.
It bends easily so simple to handle and lay down. At the same time it's softer (more pliable) than it should be so indentations don't entirely spring back from chair casters even when first in use. That makes for a bumpy rolling surface over time. The one I replaced with this also Staples' cracked over time.
Came rolled up so I could not use it for a couple of days. After that it worked fine however. I would recommend not using this on a hard wood floor though as it would scratch it. It is great for my carpeted floors though.