Disclosed is a disposable diaper having an improved fit. A disposable diaper (10) having a front waist region (11), a back waist region (12) and a crotch region (13) located between the front and back waist regions, and containing a vertically elongated absorbent base (21) extending towards the front and the rear waist regions concentrated in the crotch region, the absorbent base (21) comprising an absorbent structure (22) and a pair of side cuffs (31) extending outwardly in the lateral direction from both side edges of the absorbent structure, each of the side flaps is formed of laminated sheet materials and contains a distal edge (32) located at a distance in the lateral direction from the lateral edge of the absorbent structure and extending in the vertical direction, a tap-off discharge line (33) formed between the lateral edge of the absorbent structure and the corresponding far the edge for passing in the vertical direction, the elastic section (41) of the leg opening extending between the tap-off line of the cuff and the far edge, and the cuff (51) for protection against leakage, which extends from the lateral line of the flap and extends in the direction intersecting the elastic section of the leg opening, the flap for protection against leakage has a free edge (52) parallel to the distance in the lateral direction from the lateral flap for passing in the vertical direction from the bypass line of the cuff to the far edge is greater than the distance from the bypass line of the cuff to the free edge, and the number of layers of sheet material contained in the elastic section of the leg opening, b More than the number of layers of sheet material contained in the flap to protect against leakage.Раскрыт одноразовый подгузник, имеющий улучшенное прилегание. Одноразовый подгузник (10), имеющий переднюю поясную область (11), заднюю поясную область (12) и промежностную область (13), расположенную между передней и задней поясными областями, и содержащий вертикально
