Leak-proof uye Locking Basa -Rakareruka uye rakasimba rekuvhara basa, mushure mekunge chivharo chepamusoro chavharwa, rova zvinyoro nyoro pachivharo chekuvhara, kuitira kuti bhodhoro remvura rivharwe kana usiri kushandiswa, nekudaro kudzivirira zvinobudirira kubva pakudonha. Panguva imwecheteyo, chivharo chepamusoro chinogona kuchengetedza muromo wako wekunwa zvakanyanya kujeka.