Buckle and buckle male part

A buckle male part comprising:

• a slider-holding frame holding a slider of a slide fastener, the slider being separate from the slider-holding frame;
• a first buckle arm having a first base end and a first terminal end and extending between the first base end and the first terminal end, the first base end connected to a first portion of the slider-holding frame;
• a first buckle locking protrusion formed at the first terminal end of the first buckle arm;
• a second buckle arm having a second base end and a second terminal end and extending between the second base end and the second terminal end, the second buckle arm extending away from the slider-holding frame in a same direction as the first buckle arm, the second base end connected to a second portion of the slider-holding frame;
• and
• a second buckle locking protrusion formed at the second terminal end of the second buckle arm, wherein
• the slider-holding frame includes a frame portion extending between the first and second portions of the slider-holding frame, the frame portion protruded outwardly of the slider held by the slider-holding frame into a first space between the first and second buckle arms toward a second space between the first and second buckle locking protrusions, the first space including a first slit defined between the frame portion and the first buckle arm, and a second slit defined between the frame portion and the second buckle arm, the first slit allowing the first buckle arm to be bent toward the frame portion and the second slit allowing the second buckle arm to be bent toward the frame portion.