Slide fastener

A slide fastener comprising:

• a pair of left and right first fastener tape and second fastener tape which are elongated in an up-down direction;
• a first element row provided at one end portion of the first fastener tape in a left-right direction;
• a second element row provided at one end portion of the second fastener tape in the left-right direction and facing the first element row;
• and
• a slider disposed to be slidable in the up-down direction, the slider configured to engage the first element row with the second element row by sliding upward and configured to separate the first element row and the second element row by sliding downward, wherein
• the slider includes
• a first blade configured to guide the first element row, and
• a second blade that faces the first blade and that is configured to guide the second element row,
• the first blade extends substantially parallel to the up-down direction,
• the second blade is inclined in a direction away from the first blade as going upward,
• the first element row has a plurality of first elements disposed at a predetermined interval in the up-down direction,
• each of the first elements has a first protrusion portion that protrudes upward,
• the second element row has a plurality of second elements disposed at a predetermined interval in the up-down direction, and
• each of the second elements has a second protrusion portion that protrudes downward and that is configured to engage with the first protrusion portion.