Sefa Yamadzi Minus ndi sefa yonyamulika ya madzi a pampopi yopangidwa kuti izigwiritsidwa ntchito mobwerezabwereza popanda kutaya zinthu. Minus imagwiritsa ntchito mphamvu yoyenda kuchokera pampopi kukankhira madzi kudzera mu sefa yopangidwa ndi makala a coconut owotchedwa (activated coconut charcoal), yomwe imachotsa mankhwala, tizilombo toyambitsa matenda, ndi fungo loipa. Thupi la chipangizochi lapangidwa ndi chitsulo chosapanga dzimbiri (stainless steel) chokutidwa ndi rubber kuti ligwiridwe bwino ikakhala yonyowa. Mkati mwa sefayo muli utoto wachilengedwe wa buluu wakuda (indigo) umene umatha pang'onopang'ono pogwiritsa ntchito, kusonyeza momveka bwino pamene pakufunika kusintha sefa. Sefa yagwiritsidwa ntchito ingatumizidwe kubwerera, kenaka kuyeretsedwa, kukonzedwanso mphamvu yake, ndi kugwiritsidwanso ntchito, zomwe zimapewa zinyalala zomwe zimasiyidwa ndi masefa a kamodzi kokha.

Dzina la polojekiti : Minus, Dzina laopanga : Anastasia Klimova, Dzina la kasitomala : Anastasia Klimova.