Ditholwana le meroho khomarela filimi ke mofuta oa khomarela filimi le nyenyane pores holim'a lona, le pore boholo ba ho tloha 0{2} μ m ho 10 μ m. E na le phahameng breathability, ho akarelletsa le phahameng metsi mouoane phetiso sekhahla, empa ke impermeable ho metsi a mokelikeli {p2{4}} ho ba le polasetiki e nyenyane le e qetellang, le bobeli pors, le bobeli ba litlhaku, ka botona le dipopego, ka botona Polasetiki phuthela ba ka ba koaloa, lumella bakeng sa moea permeability empa eseng metsi permeability. The mašobana a filimi permeable ha ba koaloa le ba funnel-sebopeho. dibopeho tsa mašobana a ka pele le ka morao ya filimi di fapane, lumella tsela e le 'ngoe-tsela permeability.
