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.
As received this mat emitted toxic gas. Placing it in direct sun for a day has eliminated the problem [SO far).. The mat should never be in the house or offlice after unpacking until the described sunning is done. Otherwise it is good so far.
This mat is wearing and will probably not last if like the last ones bought from Staples with this brand. Five plastic roller computer office chair is used. 200 lb user.
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.