This anti-fatigue mat is designed to work in tandem with standing desk risers (sold separately). It will help support your back, hips, knees and feet so you can get all the benefits of standing while you work. This versatile desk mat effectively "reduces" your weight by 30 percent to make standing easier on your feet and joints. Advanced multilayer construction offers a comfortable, leatherlike top surface; a memory foam inner layer; and a nonslip bottom. A perfect 30" x 20" size provides plenty of room to move around, but still can fit into the kneehole of a standard desk or built-in when it is not being used. Beveled edges help to reduce tripping issues, and 3/4" commercial-grade thickness provides hours of comfort and stability. Durable materials of this desk mat will not break down, even after years of use.This anti-fatigue mat is designed to work in tandem with standing desk risers (sold separately). It will help support your back, hips, knees and feet so you can get all the benefits of standing while you work. This versatile desk mat effectively "reduces" your weight by 30 percent to make standing easier on your feet and joints. Advanced multilayer construction offers a comfortable, leatherlike top surface; a memory foam inner layer; and a nonslip bottom. A perfect 30" x 20" size provides plenty of room to move around, but still can fit into the kneehole of a standard desk or built-in when it is not being used. Beveled edges help to reduce tripping issues, and 3/4" commercial-grade thickness provides hours of comfort and stability. Durable materials of this desk mat will not break down, even after years of use.