provided is a disposable diaper with an improved attachment. This disposable diaper (10) is provided with a region surrounding the front waist (11), a region surrounding the rear waist (12), a region between legs (13), and an absorbent structure (21) extended from the region between legs to the regions. surrounding the front and rear waist. the absorbent structure is provided with an absorbent body (22) and extensions (31) extending externally from both side edges (23) of the absorbent body in the lateral direction. The extensions are made of laminated sheet material and are provided with a longitudinally extended distal edge (32) which is spaced apart from a lateral edge of the absorbent body in the lateral direction, a line separating the sheath (33) extended between the lateral edge of the the absorbent body and the distal edge, a resilient leg section (41) extended between the line separating the sheath and the distal edge, and a leakage preventing sheath section (51) starting from the line separating the sheath. the leakage preventing sheath section has a free edge (52) which is parallel to and spaced apart from the line separating the sheath, the distance between the line separating the sheath and the distal edge is greater than the distance between the line separating the sheath and the free edge. The number of leaf materials in the elastic section of the leg is greater than the number of leaf materials in the sheath section preventing leakage.provida é uma fralda descartável com uma aperfeiçoada fixação. esta fralda descartável (10) é provida com uma região circundando a cintura frontal (11) uma região circundando a cintura traseira (12), uma região entre pernas (13), e uma estrutura absorvente (21) estendida da região entre pernas às regiões circundando as cinturas frontal e traseira. a estrutura absorvente é provida com um corpo absorvente (22) e extensões (31) se estendendo externamente de ambas bordas laterais (23) do corpo absorvente na direção lateral.
