Cov tsho hauv qab yog lub teeb yuag, mos, thiab insulating heev. Lub tsho ua los ntawm cov ntaub nylon sab nrauv thiab ntim nrog qhov hnyav ntawm 500 thiab 1000 grams, uas yog 1/6 txog 1/2 qhov hnyav ntawm lwm cov khaub ncaws caij ntuj no. Vim hais tias down yog mos, nws yog xis rau hnav li filling. Down yog tsis tshua muaj fiber ntau clumping; the outer fabric is often made of high-density coated fabric, which helps retain more air inside the garment, resulting in excellent insulation.
Cov tsho hauv qab feem ntau siv ntau dua 90% dawb goose down lossis ntau dua 90% dawb os. Lub tsho hauv qab tiag tiag nrog ntau dua 90% hauv qab muaj qhov muaj zog rwb thaiv tsev, siab loft, thiab hnav thiab hnav zoo. Cov tsho hauv qab nrog cov ntsiab lus qis ntawm 90% thiab qhov hnyav ntawm 230g txog 320g (nyob ntawm qhov loj) feem ntau haum rau ib puag ncig nrog qhov kub ntawm -20℃txog -30℃nyob rau sab qaum teb cheeb tsam. Yog tias koj kov lub tsho hauv qab thiab hnov cov plaub hau ntau, nws yeej tsis yog 90%. Yog tias koj nias rau ntawm lub tsho down thiab tso tawm, 90% down yuav nrawm nrawm thiab rov qab mus rau nws qhov qub. Yog tias koj nias rau nws thiab tso tawm, lub tsho down tsho tseem tiaj tus. Nws muaj peev xwm hais tias lub tsho down tsho koj yuav tsis muaj 90% down, lub hwj chim sau tsis txaus, thiab nws qhov kev sov siab yog qis heev.