This mat was delivered the next day after order was placed. It has performed well since that day. The "cleats" are deep enough to keep the mat from sliding. However the wheels of the chair create depressions in the mat which prevent the chair from sliding freely. After the "body" weight is off the chair the depressions go away.
Not much to review. It is as described. Would recommend Staples offering a floor mat made out of carpet material with a non-slip bottom. Would be much better than plastic.