Flat Square hepfo Umufuka ufatwa cyane mubipfunyika ibiryo byamatungo. Umufuka wo hasi uringaniye mubisanzwe ufite ubushobozi bwa 1kg, 3kg na 5kg bivura injangwe, kuvura imbwa, Ibiryo birashobora gukoreshwa mugihe gito kugirango bibe bishya nubwo zipper ziplock idasubirwaho iri hejuru yumufuka wo hasi . Ibikoresho, ibipimo hamwe nubukorikori bwumufuka wo hasi urashobora gutegurwa bikozwe ukurikije ibyo usabwa. Ibice bitatu bya firime yibikoresho bikunze guteshwa agaciro muburyo bwuburyo bwa kare kare ya pisine yo gupakira ibiryo byamatungo. Haguruka umufuka hamwe nudufuka twujuje ibisabwa birashobora no gukoreshwa mubipfunyika ibiryo byamatungo. Dukora igikapu cyiza cyo gupakira ibiryo byamatungo kugirango twongere ubwinshi, uburyohe nimirire hamwe nibikoresho bitandukanye hamwe nubwoko bwimifuka. Dutanga urutonde rwuzuye rwamatungo avura ibicuruzwa byo kurinda ibicuruzwa, gushya no kuramba.