Desco 07201, Clean Room Chair Cover, BlackDesco 07201, Clean Room Chair Cover, Black Dissipative Class 100 Clean Room and Higher Chair Covers Converts non ESD chairs to ESD Chairs in a Class 100 Clean room or higher. Dissipative (< 1 x 108 ohms) Carbon Grid Micro Filament Polyester Converts non ESD chairs to low charging chairs. Chair Back and Seat Connected to Drag Chain Allows chair to be grounded when on a conductive surface. Durable Construction Made in the United States of America