Abstract: Water-absorbing resin particles have a repulsion rate of 5% or more according to the formula (h3?h2)/h1×100(%) when a cylinder with an inner diameter of 25.4 mm, which has a mesh-like bottom onto which 0.2 g of the water-absorbing resin particles are sprinkled, is placed in a container having ion exchange water in an amount of 30 times a mass of the water-absorbing resin particles, where h1 represents a free swelling height (mm) of the water-absorbing resin particles after 1 minute from initiation of water absorption, h2 represents a height (mm) of the water-absorbing resin particles after a load of 1.3×103 Pa is applied to the water-absorbing resin particles for 1 minute after 1 minute from initiation of the water absorption, and h3 represents a height (mm) of the water-absorbing resin particles after 1 minute from release of the load applied when measuring h2.

Abstract: Disclosed is an absorbent article including an absorbent including water-absorbing resin particles, wherein the water-absorbing resin particles satisfy the following requirements (a), (b), and (c). (a) A release restoration rate represented by Formula (1) is 5% or more. (k2?k1)/k1×100(%) ??(1) (b) A water absorption rate measured by a vortex method is 5 seconds or less. (c) A retention capacity of physiological saline is 15 to 39 g/g.

Abstract: Disclosed are water-absorbing resin particles having a repulsion rate represented by Formula (1) of 5% or more: (h3?h2)/h1×100 (%) ??(1) wherein in Formula (1), when a cylinder with an inner diameter of 25.4 mm, which has a mesh-like bottom onto which 0.2 g of the water-absorbing resin particles are sprinkled, is placed in a container having ion exchange water in an amount of 30 times a mass of the water-absorbing resin particles such that the water-absorbing resin particles absorb the ion exchange water, h1 represents a free swelling height (mm) of the water-absorbing resin particles after 1 minute from initiation of the water absorption, h2 represents a height (mm) of the water-absorbing resin particles after a load of 1.3×103 Pa is applied to the water-absorbing resin particles for 1 minute after 1 minute from initiation of the water absorption, and h3 represents a height (mm) of the water-absorbing resin particles after 1 minute from release of the load. applied when measuring h2.