Ibidukikije-Byiza & BPA-Icupa ryo Kunywa bikozwe na tritan co-polyester plastike. Ni icupa ryizewe, ridafite uburozi kandi ritaryoshye, ryemeza uburambe bwiza mugihe unywa amazi. Kandi ni icupa ryamazi rishobora gukoreshwa rishobora gukoreshwa nyuma yo kwangirika.