Kapangidwe kamene kamapanga mkati mwamphamvu kwambiri, komwe kumatha kusungirako ndikunyamula zovala, mafoni am'manja, makompyuta, ma charger, ndi zina zambiri, omasuka kugwiritsa ntchito bwino ndikusamalira zinthu. Kugwiritsa ntchito ma zippers apamwamba kwambiri, mapangidwe apamwamba a zipu ziwiri, kutsegula kosalala ndi kutseka, sizivuta kutu. Wovala bwino mtunda, wosavuta komanso wothandiza. Kulumikizana kwamphamvu komanso kulimba kwapulasitiki kwamphamvu, kumakhala kolimba.