When comparing stretch fabrics, many people ask Which Fabric is Better Nylon or Polyester Spandex. Both materials offer excellent flexibility, durability, and comfort for sportswear and activewear. Nylon spandex is softer and more breathable, while polyester spandex is more durable and moisture-resistant. The best choice depends on your needs, such as comfort, sweat control, or long-lasting performance in fitness clothing and athletic wear.