Slider

A slider including:

• a slider body in which an element guide path is formed between an upper blade and a lower blade;
• a tab having an attachment shaft portion;
• and a cover member that is elastically deformable,
• in which the element guide path communicates with right and left shoulder mouths disposed at a front end portion of the slider body in a length direction and a rear mouth disposed at a rear end portion of the slider body in the length direction,
• in which the slider body has a front attachment post and a rear attachment post standing up from the upper blade, and
• in which the cover member engages with the front attachment post and the rear attachment post using elastic deformation of the cover member, wherein
• each of the front attachment post and the rear attachment post has a pair of right and left first side wall portions, and a pair of right and left second side wall portions arranged on an outside of the first side wall portions in the length direction,
• each outer wall surface of the right and left second side wall portions is arranged on an inside of each outer wall surface of the right and left first side wall portions via a step portion in a width direction,
• the right and left first side wall portions are exposed outside,
• at least a part of each of the right and left second side wall portions is accommodated in the cover member, and
• at least a part of each outer wall surface of the second side wall portions faces an inner wall surface of the cover member.