Moisture barrier bags (MBB) are specialized packaging solutions designed to protect sensitive components from moisture, humidity, oxygen, and static damage. Constructed with multi-layer laminated materials including aluminum foil and polyethylene, these bags provide an effective barrier against water vapor transmission and electrostatic discharge. Widely used across electronics manufacturing, PCB assembly, semiconductor packaging, military/aerospace, and medical device industries. Available in various thicknesses (3.6–7 mil) with heat-sealable and reclosable options. ESD-safe and MIL-SPEC compliant options available for critical applications.