So far we love this chair mat. We usually read directions when something is new. We were pleased to read the informative but simple directions.....unroll when temperature of home is 68 or above. Wait 24 hours after putting carpet in place to allow it to relax and flattened....then put the chair on it. Directions make sense although I would not have thought to give 24 hours.....We did follow the directions and are very pleased. Very nice grade of clear material. Thanks Staples