Cov ntaub tsis-woven uas tsis yog-woven uas tsim nyog rau cov nplaim hluav taws sib xyaw ua daim txhuam cev ntawm cov khoom lag luam tsheb, feem ntau yog ua los ntawm polyester fiber (PET), kom ntseeg tau tias muaj kev tiv taus kub thiab lub zog sib txuas; Qhov hnyav feem ntau yog ntawm 40 thiab 100 grams. Qhov hnyav no tuaj yeem ua kom muaj kev sib txuas txaus yam tsis ntxiv qhov hnyav ntau dhau, thiab tib lub sijhawm ua tau raws li qhov xav tau ntawm cov khoom siv sab hauv tsheb.
