It consists of four upper threads, one lower thread and one ha-shu thread, which has a highly elastic, flat and high-strength stitching effect. ‌
The advantage of four needles and six threads is its strength and durability. ‌By using four threads for six stitches, the strength and durability of the clothing are increased, making the seams smoother and firmer, and reducing the possibility of damage and deformation.
Usually we use this stitching for yoga pants, wrestling singlet and rush guard.