Ibikoresho bya co-polyester bikomeye kandi birwanya stress bikozwe hakoreshejwe uburyo bwihariye n'imiti. Birwanya umuvuduko mwinshi; Ingufu nyinshi; Bituma umwuka ugabanuka; Bituma imiterere ihora ihindagurika. Bikoreshwa cyane mu icupa ry'ibinyobwa bya karubone; Icupa rinini; Icupa ry'inzoga.