Ibicuruzwa bikozwe muri PET / PE. Hasi irashobora kwihagararaho yonyine, ifasha umufuka uhagaze kwerekana. Ikimenyetso cya Zipper, gishobora gukoreshwa. Ibikoresho byo hagati yumufuka ni polyester aluminiyumu, ifite igiciro gihenze, isura nziza nibikorwa byiza bya barrière.