A non-rigid composite sheet comprising in order (i) a first component having an areal weight of from 88 to 678 gsm comprising a first fabric of filamentary yarns having a tenacity of at least 11 g/dtex and a first polymeric layer, (ii) a second component having an areal weight of from 120 to 430 gsm comprising a paper positioned adjacent to the first fabric of the first component, the paper comprising aramid fibers and a polymeric binder, - the paper further comprising mica, vermiculite, ceramic fiber, glass fiber or blends thereof, or - the second component comprising a lightweight open weave fabric scrim embedded into or laid onto a layer of mica platelets, and (iii) a third component having an areal weight of from 88 to 678 gsm comprising a second fabric of filamentary yarns having a tenacity of at least 11 g/dtex and a second polymeric layer, the second fabric of the third component being adjacent to the paper of the second component, wherein (a) the yarns of the first and second fabrics comprise aromatic polyamide, aromatic copolyamide, glass fiber or carbon fiber, and (b) the polymer of the first polymeric layer of the first component and second polymeric layer of the third component is polyurethane, polyethylene, polypropylene, polyethylenenaphthalate, polyacrylonitrile, fluoropolymer, polyimide, polyketone, polysulfone, polyarylene sulfide, liquid crystal polymer, polycarbonate or an ionomer. (i) a first component having an areal weight of from 88 to 678 gsm comprising a first fabric of filamentary yarns having a tenacity of at least 11 g/dtex and a first polymeric layer, (ii) a second component having an areal weight of from 120 to 430 gsm comprising a paper positioned adjacent to the first fabric of the first component, the paper comprising aramid fibers and a polymeric binder, - the paper further comprising mica, vermiculite, ceramic fiber, glass fiber or blends thereof, or - the second component comprising a lightweight open weave fabric scrim embedded into or laid onto a layer of mica platelets, and - the paper further comprising mica, vermiculite, ceramic fiber, glass fiber or blends thereof, or - the second component comprising a lightweight open weave fabric scrim embedded into or laid onto a layer of mica platelets, and (iii) a third component having an areal weight of from 88 to 678 gsm comprising a second fabric of filamentary yarns having a tenacity of at least 11 g/dtex and a second polymeric layer, the second fabric of the third component being adjacent to the paper of the second component, wherein (a) the yarns of the first and second fabrics comprise aromatic polyamide, aromatic copolyamide, glass fiber or carbon fiber, and (b) the polymer of the first polymeric layer of the first component and second polymeric layer of the third component is polyurethane, polyethylene, polypropylene, polyethylenenaphthalate, polyacrylonitrile, fluoropolymer, polyimide, polyketone, polysulfone, polyarylene sulfide, liquid crystal polymer, polycarbonate or an ionomer. (a) the yarns of the first and second fabrics comprise aromatic polyamide, aromatic copolyamide, glass fiber or carbon fiber, and (b) the polymer of the first polymeric layer of the first component and second polymeric layer of the third component is polyurethane, polyethylene, polypropylene, polyethylenenaphthalate, polyacrylonitrile, fluoropolymer, polyimide, polyketone, polysulfone, polyarylene sulfide, liquid crystal polymer, polycarbonate or an ionomer.