This material is made from woven 132/inch mesh polyester fibers (0.0068 in openings) coated with nickel-blackened copper for better corrosion resistance. This is a high performance mesh style shielding fabric designed to be highly transparent, with 70% light transmission. It combines high performance (40 dB or better), ultra light weight, and flexibility. It is very easy to handle, but it is not suitable for prolonged skin contact for those with a nickel allergy. It has a 0.1 Ohm/sq resistivity.