In the present invention, a surface sheet (2) comprises a laminated body of a first sheet and a second sheet. The laminated body has a plurality of joining portions that partially join the first sheet and the second sheet. The first sheet forms a plurality of protrusions which protrude in a direction away from the second sheet and toward the wearer's body in locations other than the joining portions. The surface sheet (2) has a central area (S) and a pair of side areas (M) adjoining the central area (S). The shapes and/or arrangement patterns of the joining portions are different in the central area (S) and the side areas (M). The area ratio of the joining portions is substantially the same in the central area (S) and the side areas (M). The number of the joining portions per unit area is greater in the side areas (M) than in the central area (S).本發明之正面片材(2)包含第1片材與第2片材之積層體。積層體具有複數個因第1片材與第2片材之局部接合所產生之接合部，第1片材於除接合部以外之部位向遠離第2片材之方向突出，而形成朝向穿著者之身體突出之複數個凸部。正面片材(2)具有中央區域(S)、及與中央區域(S)相鄰之一對側部區域(M)。接合部之形狀及/或配置圖案於中央區域(S)與側部區域(M)不同。接合部之面積率於中央區域(S)與側部區域(M)大致相同。每單位面積之接合部之個數係側部區域(M)多於中央區域(S)。
