An automobile hood , comprising: a panel , a reinforcing member , and a joint that joins together the panel and the reinforcing member , wherein: the reinforcing member includes a structure formed from a plurality of units having a hexagonal annular shape disposed in a close-packed arrangement; the unit has a floor , an inclined wall , and a top plate ; the floor is adjacent to the panel ; the top plate and the panel are separated from each other; the inclined wall is between the floor and the top plate ; a hexagonal annular ridge line of the unit is between the floor and the inclined wall ; the floor has an annular end part which is centered on a center of the annular unit ; and the floor includes a floor surface as a face which faces the panel , characterised in that : all of the end part is between a first circle (CR1) which is inscribed within the ridge line , and a second circle (CR2) which is concentric with the first circle (CR1) and which has a radius (r2) that is 60% of a radius (r1) of the first circle (CR1); and a width (W1) of the floor surface is 2 mm or more over an entire area of the annular end part in a circumferential direction of the annular end part . a panel , a reinforcing member , and a joint that joins together the panel and the reinforcing member , wherein: the reinforcing member includes a structure formed from a plurality of units having a hexagonal annular shape disposed in a close-packed arrangement; the unit has a floor , an inclined wall , and a top plate ; the floor is adjacent to the panel ; the top plate and the panel are separated from each other; the inclined wall is between the floor and the top plate ; a hexagonal annular ridge line of the unit is between the floor and the inclined wall ; the floor has an annular end part which is centered on a center of the annular unit ; and the floor includes a floor surface as a face which faces the panel , characterised in that : all of the end part is between a first circle (CR1) which is inscribed within the ridge line , and a second circle (CR2) which is concentric with the first circle (CR1) and which has a radius (r2) that is 60% of a radius (r1) of the first circle (CR1); and a width (W1) of the floor surface is 2 mm or more over an entire area of the annular end part in a circumferential direction of the annular end part . the reinforcing member includes a structure formed from a plurality of units having a hexagonal annular shape disposed in a close-packed arrangement; the unit has a floor , an inclined wall , and a top plate ; the floor is adjacent to the panel ; the top plate and the panel are separated from each other; the inclined wall is between the floor and the top plate ; a hexagonal annular ridge line of the unit is between the floor and the inclined wall ; the floor has an annular end part which is centered on a center of the annular unit ; and the floor includes a floor surface as a face which faces the panel , characterised in that : all of the end part is between a first circle (CR1) which is inscribed within the ridge line , and a second circle (CR2) which is concentric with the first circle (CR1) and which has a radius (r2) that is 60% of a radius (r1) of the first circle (CR1); and a width (W1) of the floor surface is 2 mm or more over an entire area of the annular end part in a circumferential direction of the annular end part . all of the end part is between a first circle (CR1) which is inscribed within the ridge line , and a second circle (CR2) which is concentric with the first circle (CR1) and which has a radius (r2) that is 60% of a radius (r1) of the first circle (CR1); and a width (W1) of the floor surface is 2 mm or more over an entire area of the annular end part in a circumferential direction of the annular end part . <EOS>