A clip for attaching an attachment member to a corresponding panel by inserting it into a fixing hole of the corresponding panel in a state where the clip is attached to a clip seat of the attachment member, the clip comprising: a clip main body made of a resin, the clip main body having a front view shape having a closed end portion and an open end portion; wherein the clip main body comprises an engagement arm and a holding member positioned on an inner side of the engagement arm; wherein the engagement arm is configured to be pressed when the clip main body penetrates through the fixing hole of the corresponding panel so as to be elastically deformed, and the engagement arm is configured to engage with an edge of the fixing hole when the engagement arm is inserted into the fixing hole; and wherein the holding member is configured to hold a state in which the clip main body is attached to the clip seat of the attachment member; characterized in that the engagement arm and the holding member are connected to each other in a location near the closed end portion and a location near the open end portion of the clip main body so that the engagement arm and the holding member are connected to each other substantially in a rhombic-loop shape from a front view, and the engagement arm and the holding member are disposed in different positions from a side view, and are configured to overlap each other as seen from the front view during an elastic deformation thereof, wherein a slit is formed between the engagement arm and the holding member, and wherein the slit is formed in a straight line that is terminated at the location near the closed end portion and is terminated at the location near the open end portion. a clip main body made of a resin, the clip main body having a front view shape having a closed end portion and an open end portion; wherein the clip main body comprises an engagement arm and a holding member positioned on an inner side of the engagement arm; wherein the engagement arm is configured to be pressed when the clip main body penetrates through the fixing hole of the corresponding panel so as to be elastically deformed, and the engagement arm is configured to engage with an edge of the fixing hole when the engagement arm is inserted into the fixing hole; and wherein the holding member is configured to hold a state in which the clip main body is attached to the clip seat of the attachment member; characterized in that the engagement arm and the holding member are connected to each other in a location near the closed end portion and a location near the open end portion of the clip main body so that the engagement arm and the holding member are connected to each other substantially in a rhombic-loop shape from a front view, and the engagement arm and the holding member are disposed in different positions from a side view, and are configured to overlap each other as seen from the front view during an elastic deformation thereof, wherein a slit is formed between the engagement arm and the holding member, and wherein the slit is formed in a straight line that is terminated at the location near the closed end portion and is terminated at the location near the open end portion.