To achieve fastening with no looseness for a plurality of objects different in thickness using a single clip.

A clip is provided which includes a grommet G equipped with a head 1 and a plurality of legs 2, 2, ... and a shaft body P pressed into the grommet G from the head 1 thereof and after allowing the legs of the grommet G to pass through a through-hole Pa of an object P, the shaft body P is completely pressed into the through-hole Pa and the legs 2 is deflected or its redeflection is prevented to be fastened to the object P. In the clip, at least one leg out of the plurality of legs 2, 2, ... is formed into a movable leg 20 allowing accompanying motion up to a position at which the extremity thereof protrudes from the edge Pb of the through-hole on the end of the through-hole Pa by the foregoing pressing motion of the shaft P.