Straighten the end of a paper clip.

Push the straightened end into the carpet and through the pad until it hits the floor.

Grab the paper clip where it's flush with the carpet and measure the distance.

• If your carpet is 1/4" thick or less (without a carpet pad) we recommend a 5mm Roll-Up Chairmat.
• If your carpet and pad is 3/8" thick or less we recommend a 8mm Deluxe Roll-Up Chairmat.
• If your carpet and pad is 3/4" thick or more we recommend a 12mm Tri-Fold Chairmat.