Loaʻa i ka flame retardant hollow fiber kahi ʻano hollow i loko, ʻo kēia ʻano hana kūikawā i loaʻa iā ia nā waiwai kūʻokoʻa a me nā mea maikaʻi, i hui pū ʻia me ka lapalapa ahi ikaika, no laila makemake ʻia ia ma nā ʻano āpau.