A composition comprising greater than 50 weight percent to less than 75 weight percent of a polyetherimide, a poly(arylene ether sulfone), or a cyclic olefin copolymer; and greater than 25 weight percent to less than 50 weight percent of a filler; wherein when the polymer comprises the polyetherimide, the filler comprises wollastonite fibers having an average fiber diameter of 5 micrometers to 10 micrometers and an average fiber length of 55 micrometers to 75 micrometers, a surface area of 2.5 m 2 /g to less than 2.9 m 2 /g, a bulk density of 0.42 g/cc to 0.50 g/cc, and a silica content of 52% to 55%; or boehmite having an average particle size, as determined by laser light scattering, of 0.4 micrometer to less than 0.9 micrometer; when the polymer comprises the poly(arylene ether sulfone), the filler comprises wollastonite fibers having an average fiber diameter of 1 micrometers to 5 micrometers and an average fiber length of 5 micrometers to 12 micrometers, a surface area of 3.8 m 2 /g to 4.3 m 2 /g, and a bulk density of 0.48 g/cc to 0.56 g/cc; or boehmite having an average particle size, as determined by laser light scattering, of 0.4 micrometer to less than 0.9 micrometer; and when the polymer comprises the cyclic olefin copolymer, the filler comprises wollastonite fibers having an average fiber diameter of 10 micrometers to 15 micrometers and an average fiber length of 140 micrometers to 165 micrometers, a surface area of 1.0 m 2 /g to 1.8 m 2 /g, and a bulk density of 0.18 g/cc to 0.26 g/cc; wherein weight percent is based on the total weight of the composition. greater than 50 weight percent to less than 75 weight percent of a polyetherimide, a poly(arylene ether sulfone), or a cyclic olefin copolymer; and greater than 25 weight percent to less than 50 weight percent of a filler; wherein when the polymer comprises the polyetherimide, the filler comprises wollastonite fibers having an average fiber diameter of 5 micrometers to 10 micrometers and an average fiber length of 55 micrometers to 75 micrometers, a surface area of 2.5 m 2 /g to less than 2.9 m 2 /g, a bulk density of 0.42 g/cc to 0.50 g/cc, and a silica content of 52% to 55%; or boehmite having an average particle size, as determined by laser light scattering, of 0.4 micrometer to less than 0.9 micrometer; wollastonite fibers having an average fiber diameter of 5 micrometers to 10 micrometers and an average fiber length of 55 micrometers to 75 micrometers, a surface area of 2.5 m 2 /g to less than 2.9 m 2 /g, a bulk density of 0.42 g/cc to 0.50 g/cc, and a silica content of 52% to 55%; or boehmite having an average particle size, as determined by laser light scattering, of 0.4 micrometer to less than 0.9 micrometer; when the polymer comprises the poly(arylene ether sulfone), the filler comprises wollastonite fibers having an average fiber diameter of 1 micrometers to 5 micrometers and an average fiber length of 5 micrometers to 12 micrometers, a surface area of 3.8 m 2 /g to 4.3 m 2 /g, and a bulk density of 0.48 g/cc to 0.56 g/cc; or boehmite having an average particle size, as determined by laser light scattering, of 0.4 micrometer to less than 0.9 micrometer; and wollastonite fibers having an average fiber diameter of 1 micrometers to 5 micrometers and an average fiber length of 5 micrometers to 12 micrometers, a surface area of 3.8 m 2 /g to 4.3 m 2 /g, and a bulk density of 0.48 g/cc to 0.56 g/cc; or boehmite having an average particle size, as determined by laser light scattering, of 0.4 micrometer to less than 0.9 micrometer; and when the polymer comprises the cyclic olefin copolymer, the filler comprises wollastonite fibers having an average fiber diameter of 10 micrometers to 15 micrometers and an average fiber length of 140 micrometers to 165 micrometers, a surface area of 1.0 m 2 /g to 1.8 m 2 /g, and a bulk density of 0.18 g/cc to 0.26 g/cc; wherein weight percent is based on the total weight of the composition.