A composite sheet comprising: a substrate having a first outer surface and an opposing second outer surface; and a multi-layer coating on the first outer surface of the substrate, the multi-layer coating comprising: a metal layer overlaying the first outer surface of the substrate; and an outer polymeric layer overlaying the metal layer, and comprising a three-dimensional network containing a plurality of linkages having a structure -A-R-B-, wherein A is an olefin group polymerically linked to another olefin group, B is a silane or isocyanate group cross-linked to another silane or isocyanate group, and R is a diradical comprising at least one of a C1 to C20 alkylene or aryl, each optionally substituted with a member selected from the group consisting of O, N, P and S, and wherein the alkylene can be linear, branched, or cyclic wherein the substrate comprises a nonwoven sheet selected from the group consisting of flash-spun plexifilamentary sheets, spunbond nonwoven sheets, spunbond-meltblown nonwoven sheets, spunbond-meltblown-spunbond nonwoven sheets, and laminates that include a nonwoven sheet or scrim bonded to a moisture vapor permeable film layer, or wherein the substrate comprises a woven sheet comprising woven fibers or tapes. a substrate having a first outer surface and an opposing second outer surface; and a multi-layer coating on the first outer surface of the substrate, the multi-layer coating comprising: a metal layer overlaying the first outer surface of the substrate; and an outer polymeric layer overlaying the metal layer, and comprising a three-dimensional network containing a plurality of linkages having a structure -A-R-B-, wherein A is an olefin group polymerically linked to another olefin group, B is a silane or isocyanate group cross-linked to another silane or isocyanate group, and R is a diradical comprising at least one of a C1 to C20 alkylene or aryl, each optionally substituted with a member selected from the group consisting of O, N, P and S, and wherein the alkylene can be linear, branched, or cyclic wherein the substrate comprises a nonwoven sheet selected from the group consisting of flash-spun plexifilamentary sheets, spunbond nonwoven sheets, spunbond-meltblown nonwoven sheets, spunbond-meltblown-spunbond nonwoven sheets, and laminates that include a nonwoven sheet or scrim bonded to a moisture vapor permeable film layer, or wherein the substrate comprises a woven sheet comprising woven fibers or tapes. a metal layer overlaying the first outer surface of the substrate; and an outer polymeric layer overlaying the metal layer, and comprising a three-dimensional network containing a plurality of linkages having a structure -A-R-B-, wherein A is an olefin group polymerically linked to another olefin group, B is a silane or isocyanate group cross-linked to another silane or isocyanate group, and R is a diradical comprising at least one of a C1 to C20 alkylene or aryl, each optionally substituted with a member selected from the group consisting of O, N, P and S, and wherein the alkylene can be linear, branched, or cyclic wherein the substrate comprises a nonwoven sheet selected from the group consisting of flash-spun plexifilamentary sheets, spunbond nonwoven sheets, spunbond-meltblown nonwoven sheets, spunbond-meltblown-spunbond nonwoven sheets, and laminates that include a nonwoven sheet or scrim bonded to a moisture vapor permeable film layer, or wherein the substrate comprises a woven sheet comprising woven fibers or tapes.