Clear rectangular chairmat will extend the life of your carpet by spreading out the pressure from your chair casters. It will also reduce fatigue by allowing easier rolling across your work space with less back and leg strain. Use on medium-plush carpets including padding. Studded back is designed to achieve a strong grip without piercing or damaging your carpet backing, smooth edge for smoother rolling on and off your mat, and a 25" wide x 12" deep lip to cover the carpet under your desk when your chair is pushed all the way in. Crystal-clear chairmat lets the beauty of your carpeting show through. Heavy-duty material stands up to daily wear and tear.