Pepala la Polycarbonate Hollow lili ndi ntchito yabwino yotchinjiriza kutentha, kuchepetsa kusinthasintha kwa kutentha kwamkati ndi kugwiritsa ntchito mphamvu. Ndi kukana kwanyengo kwamphamvu komanso moyo wautali wautumiki, ndi chisankho chabwino pakupulumutsa mphamvu komanso kuteteza chilengedwe.