Polyester Spandex: The Ultimate Fabric for Dancewear Enthusiasts Table of Contents. uas Polyester Spandex 2.1 Elasticity and Stretch 2.2 Breathability and Mosumre-Wicking 2.3 Durability and Longevity 3. Txojkev Siab Sib Polyester Spandex Huv Dancewear 3.1 Comfort and Fit 3.2 Versatility in Design 3.3 Easy Maintenance.