Cov ntaub ntawv tseem ceeb ntawm ultra-fine fiber ntau phuam plaub hau yog polyester thiab nylon. Hauv Suav teb, polyester suav rau 80% thiab nylon nyiaj rau 20%, thiab tseem muaj 100% polyester. Txawm li cas los xij, cov nyhuv nqus dej thiab txhais tes ntawm 100% polyester tsis zoo. Lub fineness ntawm ultrafine fibers yog nyob nruab nrab ntawm 0.1-0.5 denier, nrog ib txoj kab uas hla ntawm tsawg tshaj li 5 microns. Nws cov fiber ntau zoo yog 1/200 ntawm tib neeg cov plaub hau thiab 1/20 ntawm cov tshuaj fibers zoo tib yam. Lub zog fiber ntau yog 5 npaug ntawm cov fibers zoo tib yam (durability), thiab nws lub peev xwm adsorption, dej nqus ceev, thiab dej nqus dej yog 7 npaug ntawm cov fibers zoo tib yam.
