The Crossbreed ARK resistor bag is a must have for your doomsday preps or general electronics security. Made to exceed the strict standards of MIL-PRF-81705 for EMP and static discharge resistance, making the Crossbreed ARK resistor bag perfect for anything that you want to keep safe in the event of a serious EMP disaster. The resistor bag is reuseable by design and has an excellent track record with 20 years of experience behind it. The ARK resistor bag can be used to line a case and serve as a Faraday cage, or when heat sealed its not only waterproof, dustproof, and corrosion proof, but puncture resistant as well making it a must have for disaster planning.