1. An absorbent article, such as a sanitary pad or incontinence pad (1), having longitudinal side edges (2, 3) and transverse end edges (4, 5) and containing a fluid-permeable top sheet (8), not a fluid-permeable backsheet (9) and an absorbent core (10) located between said upper sheet (8) and said backsheet (9), said absorbent core (10) having a first absorption layer (11) having an opening (12) passing through it, and structural element (13) for p regulating a fluid flow located between said first absorbent layer (11) and said back sheet (9), characterized in that the first absorbent layer (11) has a front part (6) defined in the longitudinal direction and a rear part defined in the longitudinal direction ( 7), and a narrow transverse transition zone (14) is located between the specified front part (6) and the specified rear part (7), and the width of the narrow transverse transition zone (14) is 50-75% of the largest, defined in the transverse direction of the front width cha ti (6) of the first absorbent layer (11), and 20-50% of the opening (12) defined by the length in the longitudinal direction is disposed in the front portion (6) of the first absorbent layer (11) .2. An absorbent article according to claim 1, wherein the width of the narrow transverse transition zone (14) is 50-75%, preferably 55-70% of the largest, defined in the transverse direction, width of the rear part (7) of the first absorbent layer (11). 3. An absorbent product according to claim 1, wherein the width of the narrow transverse transition zone (14) is 55-70% of the largest, defined in the transverse direction of the width of the front part (6) of the first absorbent layer (11). 4. The absorbent article of claim 1, wherein1. Поглощающее изделие, такое как гигиеническая прокладка или прокладка (1), используемая при недержании, имеющее продольные боковые края (2, 3) и поперечные концевые края (4, 5) и содержащее проницаемый для текучих сред верхний лист (8), не проницаемый для текучих сре
