The mat definitely stays in place but because the it's relatively thin and fairly flexible my desk chair still forms divots. The carpet we've got is semi-low pile but not very low so that probably doesn't help. I'm going to have to get a thicker mat.
Works fine. Was concerned if the thickness would be sufficient to support a rolling chair. It is a sturdy solid mat that works great for a rolling chair on a carpeted area. Would recommend and buy it again.