THE PROBLEM:- Anti-Fatigue Mats are great for standing but get in the way of the chair for sitting.- Chairs must be rolled on top of the mats where they don't fit and "lock" into position OR users must bend down to move the mat. THE SOLUTION: The SIT-STAND SMARTMAT is:- Foot activated, which allows the mat to "move like magic".- Easily moved back and forth under the desk without bending or lifting.- Proven to increase standing times.- Also the most comfortable mat on the market for sock, stocking or bare feet as the soft, breathable, support isn't sticky or hot. The cushion is a closed cell nitrile cushion permanently molded to the nitrile rubber surface. The Premium Smart Mat is an extremely high quality anti-fatigue mat that will retain it's compression, color and function for many years.