A shoe press belt which is an object having the shape of an endless loop with an inner surface and an outer surface, the shoe press belt comprising: - an elastomer body, and - a support structure (20, 21, 22, 23) for the elastomer body, the elastomer body comprising: - a plurality of parallel dewatering grooves (50, 50a, 50b) on the outer surface of the shoe press belt, wherein a ridge is provided between two adjacent dewatering grooves (50a, 50b), and at least a first one of said dewatering grooves (50, 50a, 50b) comprises: - a first wall of the dewatering groove (50, 50a, 50b), - a second wall of the dewatering groove (50, 50a, 50b), and - a bottom of the dewatering groove (50, 50a, 50b) between the first wall and the second wall of the dewatering groove, wherein the first wall of the dewatering groove (50, 50a, 50b) comprises a plurality of parallel auxiliary grooves (100, 100a, 100b) of the dewatering groove, preferably extending to the outer surface of the shoe press belt, characterized in that at least one auxiliary groove (100, 100a, 100b) of the dewatering groove (50, 50a, 50b) has a slightly curved shape so that the radius of curvature of said at least one auxiliary groove is at least 10 mm. - an elastomer body, and - a support structure (20, 21, 22, 23) for the elastomer body, the elastomer body comprising: - a plurality of parallel dewatering grooves (50, 50a, 50b) on the outer surface of the shoe press belt, wherein a ridge is provided between two adjacent dewatering grooves (50a, 50b), and at least a first one of said dewatering grooves (50, 50a, 50b) comprises: - a first wall of the dewatering groove (50, 50a, 50b), - a second wall of the dewatering groove (50, 50a, 50b), and - a bottom of the dewatering groove (50, 50a, 50b) between the first wall and the second wall of the dewatering groove, wherein the first wall of the dewatering groove (50, 50a, 50b) comprises a plurality of parallel auxiliary grooves (100, 100a, 100b) of the dewatering groove, preferably extending to the outer surface of the shoe press belt, characterized in that at least one auxiliary groove (100, 100a, 100b) of the dewatering groove (50, 50a, 50b) has a slightly curved shape so that the radius of curvature of said at least one auxiliary groove is at least 10 mm. the elastomer body comprising: - a plurality of parallel dewatering grooves (50, 50a, 50b) on the outer surface of the shoe press belt, wherein a ridge is provided between two adjacent dewatering grooves (50a, 50b), and at least a first one of said dewatering grooves (50, 50a, 50b) comprises: - a first wall of the dewatering groove (50, 50a, 50b), - a second wall of the dewatering groove (50, 50a, 50b), and - a bottom of the dewatering groove (50, 50a, 50b) between the first wall and the second wall of the dewatering groove, - a plurality of parallel dewatering grooves (50, 50a, 50b) on the outer surface of the shoe press belt, wherein a ridge is provided between two adjacent dewatering grooves (50a, 50b), and at least a first one of said dewatering grooves (50, 50a, 50b) comprises: - a first wall of the dewatering groove (50, 50a, 50b), - a second wall of the dewatering groove (50, 50a, 50b), and - a bottom of the dewatering groove (50, 50a, 50b) between the first wall and the second wall of the dewatering groove, - a first wall of the dewatering groove (50, 50a, 50b), - a second wall of the dewatering groove (50, 50a, 50b), and - a bottom of the dewatering groove (50, 50a, 50b) between the first wall and the second wall of the dewatering groove, wherein the first wall of the dewatering groove (50, 50a, 50b) comprises a plurality of parallel auxiliary grooves (100, 100a, 100b) of the dewatering groove, preferably extending to the outer surface of the shoe press belt, characterized in that at least one auxiliary groove (100, 100a, 100b) of the dewatering groove (50, 50a, 50b) has a slightly curved shape so that the radius of curvature of said at least one auxiliary groove is at least 10 mm.