Looking for a way to protect your devices from an EMP attack? Look no further than the FARADAY NEST-Z KIT 40PC! These bags are specifically designed to meet or exceed the electrical and physical requirements of ANSI/ESD S541, and to be ANSI/ESD S20.20 compliant. They're also ROHS compliant and lead-free, so you can feel confident that your devices are safe when stored in these bags. Plus, the Ziploc closure system ensures a tight seal every time.