Filastik ruwan kwalban shine amfaninmu na yau da kullun don ɗaukar akwati mai ruwa, yawanci tsayin tsayi ya fi girman girman sifofin silinda, don sauƙin ɗauka da riƙe zafin ruwa, akwai kuma kwalabe masu siffar murabba'i.Wasu blettles kuma za su sami abin hannu, hannu, ko tare da ƙarin maganin zafi, adana zafi da sauran ayyukan tsarin.Gilashin ruwa gabaɗaya ƙarami ne kuma ana iya ɗauka cikin sauƙi da hannu ɗaya.Kasan kwalbar yana da faɗi kuma ana iya sanya shi a tsaye akan tebur.Jikin da aka yi shi da gilashi, yumbu, filastik, ƙarfe da sauran ƙarfi, kayan da ba za a iya narkewa ba, kuma yana iya ɗaukar abubuwa iri-iri da ake ci (kamar ruwa, sha, sha, da sauransu).