Nsalu yosaluka ya spunalce yoyenera kuphimba ma duvet otayidwa, makamaka yopangidwa ndi ulusi wa polyester (PET) ndi ulusi wa viscose (ulusi wa viscose); Kulemera kwake nthawi zambiri kumakhala pakati pa 40-80gsm. Mtundu wopepuka komanso wopumira wa 40-80gsm ndi woyenera kugwiritsidwa ntchito kwakanthawi kochepa, pomwe mtundu wa 80-100gsm ndi wokhuthala komanso wolimba, wokhoza kupirira ntchito zambiri zoyika ndi kusintha. Mtundu, kapangidwe, ndi kumveka zimatha kusinthidwa;
