Long down coats often face issues like restricted hems and limited flexibility during wear. For a better wearing experience, many manufacturers use two way open end zippers in their clothes, which can be opened from the bottom.

In daily use, the SBS two way open end quick release zipper offers better flexibility when sitting: by simply pushing the legs outward, the zipper can be opened, reducing the feeling of constraint without needing to use hands. Additionally, when taking off the coat, the wearer can pull outward from the collar with both hands, without bending over to zip it down.

For autumn and winter long coats that need to balance warmth with freedom of movement, the two way open end quick release zipper improves comfort and is a practical accessory worth considering in garment design.