Dawb os nws tus kheej tsim roj, uas sai sai dissipates tom qab absorbing noo noo. Yog li ntawd, duck down muaj kev ua haujlwm zoo ntawm cov dej noo-pov thawj. Ntau txhiab lub qhov cua yog ntom ntom rau ntawm lub pob zoo li fibers ntawm duck down, uas muaj kev ua haujlwm ntawm kev nqus dej thiab dehumidification kom cov khoom qhuav txhua lub sijhawm.
Down yog kev ruaj ntseg, ib puag ncig tus phooj ywg thiab cov khoom siv thermal zoo tshaj plaws. Kev ua lag luam rau cov khoom lag luam poob ib txwm muaj, yog li kev tsim khoom ntawm RONGDA nqes thiab plaub yuav nyob mus ib txhis.