SCS 1500 open top Metal-Out static shielding bags are manufactured from a top coat, metal, polyester, polyethylene laminate. The proprietary top coating is designed to protect the metal layer. Polyester dielectric, in concert with the metal layer, is intended to provide shielding of Electrostatic Discharge (ESD) and to help minimize the penetration of electric field. NOTE: Many additional custom sizes are available. Please contact us for more information if your desired size is not listed. - 1500 open top transparent metal-out static shielding bag is designed to provide static safe packaging for the shipment and/or storage of ESD sensitive items including outside ESD protected areas. Bags are printed with an ESD protective symbol and a lot code for traceability. The bags are heat sealable. NOTE: Many additional custom sizes are available. Please contact us for more information if your desired size is not listed.