To prevent a dent (wrinkle) from being generated in an outside part near both sides with bent parts 5g and 6g in the middle in the weather strips 5 and 6 being put in between both the ends, when the bent parts 5g and 6g are provided, the bent parts being bent correspondent to corner parts of roof panels 3 and 4, in weather strips 5 and 6 which are attached to a whole peripheral part of the roof panels 3 and 4 for closing an opening formed in a fixed roof of a vehicle.

In weather strips 5 and 6, a bending angle θ1 of bent parts 5g and 6g before attaching to peripheral parts of roof panels 3 and 4 is larger than an angle θ2 of corner parts corresponding to the bent parts 5g and 6g in the roof panels 3 and 4. They are attached to the peripheral parts of the roof panels 3 and 4 in a deformed state so that a bent angle of the bent parts 5g and 6g may become about the same with an angle of the corner parts corresponding to the bent parts 5g and 6g in the roof panels 3 and 4.