A pad capable of enhancing the fitting performance to a wearer. An absorber includes 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 the front-back direction is formed in a central portion in the width direction of the absorber. A third groove extending in the width direction is formed in a central portion in the front-back direction of the narrowing portion. A second groove extending in the width direction is formed in a front side portion in the front-back direction of the narrowing portion. A fourth groove extending in the width direction is formed in a back side portion in the front-back direction of the narrowing portion.