When the world comes to an end, will you be prepared? With the FARADAY NEST-Z KIT 5PC 5"X7", you can be. This five-piece kit includes moisture barrier bags that are built to withstand just about anything. With 11,500 PSI tensile strength, 33lb puncture resistance, and 40db EMI attenuation, these bags will protect your belongings from the elements and keep them safe in an emergency. The NEST-Z bags are also tested to meet or exceed certain electrical and physical requirements of ANSI/ESD S541 and to be ANSI/ESD S20.20 compliant. So not only are they tough, they're also safe for.