Stainless simbi insulated lunch boxes inopa kurerukirwa kukuru kwehupenyu hwezuva nezuva. Zvinhu zvayo zvinogara uye zvinogara kwenguva refu zvinovimbisa kuti inogona kumira nekuoma kwekushandiswa kwezuva nezuva. Kuvakwa kwesimbi isina tsvina zvakare kuri nyore kuchenesa uye kushoma kuchengetedza kuravira kana kunhuwa, zvichipa hutsanana hwekudyira ruzivo. Pamusoro pezvo, kugona kwayo kuchengeta chikafu chichidziya kana kutonhora kwenguva yakareba kunoita kuti chikafu chigone kunakidzwa nekudziya kwaunoda, zvichiita kuti ive sarudzo inoshanda kune vanhu vakabatikana. Hunhu hwakagadzikana hwesimbi isina tsvina hunowedzera kukwezva kwayo, sezvo ichideredza kuvimba nemidziyo yepurasitiki inoshandiswa kamwe chete. Pakazere, zvinhu zvakaita sekureruka, kusimba, hutsanana, uye kuchengetedza kupisa kunoita kuti simbi isina kuvharirwa mabhokisi emasikati ive sarudzo ine mukurumbira uye inoshanda yekushandisa zuva nezuva.