The new design with the Bars insead of Pins do not hold the chair matt in place. As you roll your chair the matt creeps out of position and rides up against the desk to the point the edge curls. I would rather have the Pin style back this was not a good move on the manufactures part.
Nice size hard floor chair mat. Comes rolled up in a box and needs to be flattened prior to use. Saves hard wood floors from chair roller damage and wear. I bought a second one for a Christmas present.