Weather strip

A weather strip, comprising:

• a flexible strip main body;
• a core embedded in the strip main body, and including a main hole, an elongated hole extending from the main hole and having walls to define the elongated hole with a width less than a diameter of the main hole, and an engaged portion formed at a terminal end portion of the elongated hole relative to the main hole, and
• an engaging leg member to be inserted into and engaged with a mounting hole on a mounting object, said engaging leg member having a first engaging portion for engaging the mounting hole, and a second engaging portion for engaging the engaged portion of the core, said second engaging portion being a base-side engaging portion with elongated linear marginal portions having a distance substantially same as the width of the elongated hole,
• wherein the engaging leg member is arranged such that the base-side engaging portion passes through the main hole and enters the elongated hole in one direction while aligning the linear marginal portions with the walls, and
• said base-side engaging portion includes, at one side thereof, a protruding portion for preventing the engaging leg member from entering into the elongated hole from a side of the protruding portion, the protruding portion having an inclined surface gradually decreasing in thickness toward the first engaging portion.