An absorbent article comprising: a cover layer; a barrier layer; an absorbent system arranged between said cover layer and said barrier layer; wherein said absorbent article has a thickness of less than 2.5 mm; wherein at least a portion of said absorbent article satisfies one of the two following equations: AC > 18.12 - 12.11 ln(BW/MCB), where BW/MCB is < 3.45; and AC > 3.0, where BW/MCB is ≥ 3.45, wherein MCB = Modified Circular Bend Stiffness; BW = Basis Weight of the Article; and AC = absorbent capacity, wherein the Modified Circular Bend Stiffness, the Basis Weight and the Absorbent Capacity are measured using the methods described in the description wherein (i) when AC > 18.12 - 12.11 ln(BW/MCB), where BW/MCB is < 3.45said absorbent system comprises from 90% to 40% cellulosic fibers and 10% to 40% SAP; and (ii) when AC > 3.0, where BW/MCB is ≥ 3.45 said absorbent system is substantially entirely SAP, wherein said SAP is present in an amount of at least 50 gsm, wherein said SAP has an absorbent capacity of at least 20 g/g after 1 minute and a total capacity of at least 40 g/g and a gel blocking ratio of at least 0.50 and wherein said SAP is secured to an internal surface of said barrier by adhesive. a cover layer; a barrier layer; an absorbent system arranged between said cover layer and said barrier layer; wherein said absorbent article has a thickness of less than 2.5 mm; wherein at least a portion of said absorbent article satisfies one of the two following equations: AC > 18.12 - 12.11 ln(BW/MCB), where BW/MCB is < 3.45; and AC > 3.0, where BW/MCB is ≥ 3.45, wherein MCB = Modified Circular Bend Stiffness; BW = Basis Weight of the Article; and AC = absorbent capacity, wherein the Modified Circular Bend Stiffness, the Basis Weight and the Absorbent Capacity are measured using the methods described in the description wherein (i) when AC > 18.12 - 12.11 ln(BW/MCB), where BW/MCB is < 3.45said absorbent system comprises from 90% to 40% cellulosic fibers and 10% to 40% SAP; and (ii) when AC > 3.0, where BW/MCB is ≥ 3.45 said absorbent system is substantially entirely SAP, wherein said SAP is present in an amount of at least 50 gsm, wherein said SAP has an absorbent capacity of at least 20 g/g after 1 minute and a total capacity of at least 40 g/g and a gel blocking ratio of at least 0.50 and wherein said SAP is secured to an internal surface of said barrier by adhesive. AC > 18.12 - 12.11 ln(BW/MCB), where BW/MCB is < 3.45; and AC > 3.0, where BW/MCB is ≥ 3.45, wherein MCB = Modified Circular Bend Stiffness; BW = Basis Weight of the Article; and AC = absorbent capacity, wherein MCB = Modified Circular Bend Stiffness; BW = Basis Weight of the Article; and AC = absorbent capacity, (i) when AC > 18.12 - 12.11 ln(BW/MCB), where BW/MCB is < 3.45said absorbent system comprises from 90% to 40% cellulosic fibers and 10% to 40% SAP; and (ii) when AC > 3.0, where BW/MCB is ≥ 3.45 said absorbent system is substantially entirely SAP, wherein said SAP is present in an amount of at least 50 gsm, wherein said SAP has an absorbent capacity of at least 20 g/g after 1 minute and a total capacity of at least 40 g/g and a gel blocking ratio of at least 0.50 and wherein said SAP is secured to an internal surface of said barrier by adhesive.