Weather strip

A weather strip having an extrusion portion, and a molded portion connected to the extrusion portion, the weather strip comprising:

• a mounting base portion attachable to an opening portion or a door circumferential edge of a vehicle;
• a seal portion that is integrally formed with the mounting base portion and has a hollow portion;
• a slit through which a core mold is removed in a molding process of the weather strip, wherein the slit is formed in the mounting base portion, wherein the slit divides the mounting base portion into a first engaged portion and a second engaged portion, and wherein the first engaged portion and the second engaged portion are opposed to one another across the slit;
• and
• at least one blocking member, which is a separate and independent part from the mounting base portion, wherein the blocking member comprises:
• a base portion;
• an insertion portion, which projects from the base portion and which is to be fitted into the slit;
• at least one engaging projection, which projects from the base portion and which is to be engaged with at least one of the first engaged portion and the second engaged portion, and
• a lock portion, which is locked on an inner surface of the mounting base portion and which faces the hollow portion,
• wherein the blocking member blocks a predetermined zone of the slit by simultaneously clamping and locking the mounting base portion at least in a direction of width thereof.