Material: Metalized polyester, polyethylene, aluminum foil and anti-static polyethylene May be used to protect extremely critical or sensitive devices 0.0036 mil (0.00014 in.) thickness May be used with devices susceptible to damage by E.S.D, E.M.I, moisture or corrosion Available with a press to close zipper, slide rite zipper, or open top Color: Opaque Custom sizes available Compliance Meets military specifications of Mil-Prf-81705C Ty-1, CL-1 (mil spec printed)