A pad comprising a liquid-pervious front-face sheet, a liquid-impervious back-face sheet, an absorber provided between the front-face sheet and the back-face sheet, an outer sheet on an outer surface of the back-face sheet, and engagement members on both end portions in a front-back direction of the outer sheet, wherein the absorber is formed with a front body portion, a back body portion, and a narrowing portion, whose width dimension is reduced, provided between the front body portion and the back body portion, a first groove extending in a front-back direction is formed at a central portion in a width direction of the absorber, a third groove extending in the width direction is formed at a central portion in the front-back direction in the narrowing portion, a second groove extending in the width direction is formed in a front side portion in the front-back direction in the narrowing portion, and a fourth groove extending in the width direction is formed in a back side portion in the front-back direction in the narrowing portion, the second groove is formed with a second left groove extending to a back side in the front-back direction toward a left side in the width direction from the first groove and a second right groove extending to the back side in the front-back direction toward a right side in the width direction from the first groove, the fourth groove is formed with a fourth left groove extending to a front side in the front-back direction toward the left side in the width direction from the first groove and a fourth right groove extending to the front side in the front-back direction toward the right side in the width direction from the first groove, an intersection angle (θ1) between the second left groove and a first imaginary line extending in the width direction and an intersection angle (θ2) between the second right groove and the first imaginary line extending in the width direction are formed to be 25 to 35 degrees, and an intersection angle (θ3) between the fourth left groove and a second imaginary line extending in the width direction and an intersection angle (θ4) between the fourth right groove and the second imaginary line extending in the width direction are formed to be 25 to 35 degrees. the absorber is formed with a front body portion, a back body portion, and a narrowing portion, whose width dimension is reduced, provided between the front body portion and the back body portion, a first groove extending in a front-back direction is formed at a central portion in a width direction of the absorber, a third groove extending in the width direction is formed at a central portion in the front-back direction in the narrowing portion, a second groove extending in the width direction is formed in a front side portion in the front-back direction in the narrowing portion, and a fourth groove extending in the width direction is formed in a back side portion in the front-back direction in the narrowing portion, the second groove is formed with a second left groove extending to a back side in the front-back direction toward a left side in the width direction from the first groove and a second right groove extending to the back side in the front-back direction toward a right side in the width direction from the first groove, the fourth groove is formed with a fourth left groove extending to a front side in the front-back direction toward the left side in the width direction from the first groove and a fourth right groove extending to the front side in the front-back direction toward the right side in the width direction from the first groove, an intersection angle (θ1) between the second left groove and a first imaginary line extending in the width direction and an intersection angle (θ2) between the second right groove and the first imaginary line extending in the width direction are formed to be 25 to 35 degrees, and an intersection angle (θ3) between the fourth left groove and a second imaginary line extending in the width direction and an intersection angle (θ4) between the fourth right groove and the second imaginary line extending in the width direction are formed to be 25 to 35 degrees.