Fibrillation finishing is cupra's most characteristic feature. With high-count polyester for the weft, it's a clean fibrillated fabric that doesn't look too casual. In addition, there's growing interest in cupra from an environmental standpoint (eco-friendliness), especially overseas. Cupra is made using short cotton fibers around a seed called a cotton linter. It's an eco-friendly material that uses a part that's not used to make cotton yarn.