3M Electronic Specialty´s 9900 Series static control anti-fatigue mat enables workers to stand comfortably for long periods of time and minimize fatigue. The matrix of hollow cylinders functions like springs when compressed and a provides soft, stable surface supported by rubber. The durable static control anti-fatigue mat is optimized for softness, resists bottoming out, and encourages blood flow in lower legs. The 9900 Series mat also resists warping, bunching, and creeping.