A cage is provided which is less likely to be deformed by a centrifugal force, and in which the strength of a weld is less likely to decrease. Each horn portion includes a base wall axially connected to a ring portion, and located between pockets; and a pair of claws separated from each other. The pair of claws each has a pocket inner surface facing the pocket; and an opposed surface (14) on the side opposite from the pocket inner surface. The base wall includes a pair of connection portions axially connecting the respective claws to the ring portion; and an intermediate portion circumferentially connecting the connection portions to each other. A weld is disposed in a resin area consisting of one of the claws, one of the connection portions, and a circumferential section of the ring portion.