Abstract: A gas-permeable laminated sheet includes a first nonwoven fabric, a polyethylene film and a second nonwoven fabric, the first nonwoven fabric, the polyethylene film and the second nonwoven fabric being laminated in that order, the polyethylene film having a thickness in the range from 5 to 15 ?m and including a plurality of gas paths passing through the polyethylene film at areas where the polyethylene film is in contact with the fibers constituting the first nonwoven fabric and/or the second nonwoven fabric and in the vicinities of the areas, the diameter of the cross section of each of the gas paths being 20 ?m or less.