Polyester Spandex: ກ່ຽວກັບ ໂປຣເເກຣມແກ້ໄຂ ກ່ຽວກັບ ສໍ່າວ of Polyester Spandex 2.1 Elasticity and Stretch 2.2 Breathability and moille-Wicking 2.3 Durability and Longevity 3 ປະໂຫຍດ ຈາກ ການ ໃຊ້ Polyester Spandex in Dancewear 3.1 Comfort and Fit 3.2 multiplatility in Design 3.3