A laminated film roll comprising: an ultra-low refractive index layer having a refractive index of 1.20 or less; and a resin film, wherein the ultra-low refractive index layer is stacked on the resin film, and the laminated film roll is long and wherein the laminated film is long to allow continuous production in a shape of a roll, and wherein in the ultra-low refractive index layer, an abrasion resistance showing a film strength, measured with BEMCOT ® is in a range from 60% to 100%, wherein in the ultra-low refractive index layer, a folding endurance showing flexibility, measured by an MIT test is 100 times or more, wherein the test is carried out such that the ultra-low refractive index layer is cut into a piece having a size of 20 mm × 80 mm, then the obtained piece is attached to a MIT folding endurance tester, which is a product of TESTER SANGYO CO., LTD., product name: BE-202, and 1.0 N load is applied thereto; then a chuck of R 2.0 mm for holding the void-provided layer is used, application of load is at most 10000 times, and the number of times of application of load at the time of fracture of the void-provided layer is identified as the folding endurance and wherein the ultra-low refractive index layer has a porous structure, wherein the ultra-low refractive index layer is a layer formed by chemically bonding pulverized products of a gelled silicon compound by catalysis, the gelled silicon compound being a gelled product in which monomer silicon compounds of the following chemical formula are bonded: in the chemical formula , x is 2, 3, or 4, and R 1 represents a linear or a branched alkyl group. an ultra-low refractive index layer having a refractive index of 1.20 or less; and a resin film, wherein the ultra-low refractive index layer is stacked on the resin film, and the laminated film roll is long and wherein the laminated film is long to allow continuous production in a shape of a roll, and wherein in the ultra-low refractive index layer, an abrasion resistance showing a film strength, measured with BEMCOT ® is in a range from 60% to 100%, wherein in the ultra-low refractive index layer, a folding endurance showing flexibility, measured by an MIT test is 100 times or more, wherein the test is carried out such that the ultra-low refractive index layer is cut into a piece having a size of 20 mm × 80 mm, then the obtained piece is attached to a MIT folding endurance tester, which is a product of TESTER SANGYO CO., LTD., product name: BE-202, and 1.0 N load is applied thereto; then a chuck of R 2.0 mm for holding the void-provided layer is used, application of load is at most 10000 times, and the number of times of application of load at the time of fracture of the void-provided layer is identified as the folding endurance and wherein the ultra-low refractive index layer has a porous structure, wherein the ultra-low refractive index layer is a layer formed by chemically bonding pulverized products of a gelled silicon compound by catalysis, the gelled silicon compound being a gelled product in which monomer silicon compounds of the following chemical formula are bonded: in the chemical formula , x is 2, 3, or 4, and R 1 represents a linear or a branched alkyl group. <EOS>