Absorbent article

An absorbent article comprising:

• a laminate that comprises an absorbent, and a core wrap sandwiching the absorbent from upper and lower sides of the absorbent, wherein the absorbent comprises water-absorbent resin particles and a fibrous material;
• a liquid-permeable sheet disposed on an upper surface of the laminate;
• and
• a liquid-impermeable sheet disposed on a surface on a side opposite to the liquid-permeable sheet of the laminate,
• wherein the water-absorbent resin particles comprise:
• a crosslinked polymer having a monomer unit derived from an ethylenically unsaturated monomer including at least one compound selected from the group consisting of (meth)acrylic acid and a salt thereof, and
• inorganic particles,
• a proportion of (meth)acrylic acid and a salt thereof is 70 to 100 mol % with respect to a total amount of monomer units in the crosslinked polymer, and
• the water-absorbent resin particles satisfy the following requirements (a) and (b),
• (a) a surface drying index of the absorbent article represented by the following formula is 45 or lower, and
• (b) a water retention capacity of the water-absorbent resin particles for a physiological saline solution is 30 g/g or more,
• surface drying index=(moisture content index 1.5 minutes after liquid injection/moisture content index 1 minute after liquid injection)×100,
• a moisture content index measurement method:
• 160 mL of a 0.9% by mass physiological saline solution (25° C.) is injected into a center of the absorbent article using a liquid injection cylinder having an opening with an inner diameter of 3 cm, where a timing of the injection is defined as 0 minutes;
• and a measurement probe (49 mm2) is pressed on a center portion of the liquid injected site on the absorbent article, and a moisture content index at a surface of the center portion on the absorbent article is measured after a lapse of a predetermined time from the injection by an electrostatic capacitance method.