Constructed of heavy duty 4 mil black carbon impregnated Low Density Polyethylene (LDPE) film to create an extra strong static barrier. Meets specifications of MIL-P-82646, Rev. A. Protects against electrostatic charge, chemicals, abrasion and humidity if heat-sealed. Can be heat sealed, tied, stapled or taped shut. See Ties & Tapes for bag closure options.