A diaper (1A) of the invention includes a front panel (2A) a rear panel (2B), an absorbent assembly (3) fixed to the front and the rear panel to bridge them, and a standing gather (4) along each lateral side portion (3c, 3c) of the absorbent assembly (3). The absorbent assembly (3) includes a vertically oblong absorbent member (33). The absorbent member (33) has a pair of fiber-free regions (34, 34) extending in its longitudinal direction. The fiber-free regions (34, 34) each straddle the front panel (2A) and the rear panel (2B).本發明之尿片(1A)包含腹側片材構件(2A)與背側片材(2B)、跨設於其等片材(2A、2B)且固定之吸收性本體(3)、及配設於吸收性本體(3)之兩側部(3c、3c)之立體褶皺(4)。吸收性本體(3)具有縱長之吸收體(33)，且吸收體(33)具有沿其兩側緣部(33c、33c)而延伸存在之一對之非積纖部(34、34)。一對之非積纖部(34、34)係跨及腹側片材構件(2A)與背側片材構件(2B)。
