"ESD Cap Pink and Antistatic Caps" Suitable for ESD, SMT & Cleanroom Labs Surface Resistance Made Up Of Polyester With Carbon Threading Easy To Wash ESD work clothes is the most effective protection from the volt which generated by human movement during manufacturing. These volts are very tiny, but can destroy costly components, or cause unseen latent damage, ESD clothes wash once to twice per week. With recycle washing and wearing, should check ESD properties timely. Our imported ESD caps and hats are made of electro-conductive fabric. These lint free woven and non-woven caps and hats possess low resistance to electric charge that act as conduit for dissipating static charge from the operator and the object to the atmosphere.