The Electrically Conductive Anti-Fatigue Smooth Rubber surface quickly drains static electricity from workers before it can be passed on to sensitive equipment such as computers, cash registers or any product with a computer chip. Designed to dramatically reduce standing worker fatigue, Electrically Conductive Anti-Fatigue has a Nitricell Supreme Comfort sponge base. Overall thickness 1/2". For maximum effectiveness, ground the mat and keep the surface clean.