Lub sij hawm uas lub yas mannequin tuaj yeem siv tau yog nyob ntawm ntau yam, xws li qhov zoo ntawm cov khoom tsim, kev tu txhua hnub, thiab ib puag ncig uas nws siv. Yog tias cov yas mannequin yog tsim los ntawm cov ntaub ntawv zoo thiab tau txais kev saib xyuas kom zoo, tsis txhob cuam tshuam rau qhov kub thiab txias los yog tshav ntuj ncaj qha, nws tuaj yeem siv sijhawm ntev heev.
Feem ntau hais lus, nyob rau hauv ib txwm siv tej yam kev mob, lub neej ntawm cov khoom yas yog feem ntau nyob ib ncig ntawm 3 mus rau 5 xyoo. Tshaj li lub sijhawm no, cov yas yuav pib muaj hnub nyoog, ua nkig, lossis ploj xim. Rau cov hom phiaj tso saib, txawm tias cov yas mannequins yuav tsis muaj kev siv hnyav tshwj xeeb, cov duab ntev ntev tuaj yeem ua rau hnav thiab tsim kua muag lossis hloov xim, cuam tshuam rau lawv cov tsos thiab kev ua haujlwm zoo.
Txhawm rau kom ntseeg tau tias ob qho tib si zoo nkauj thiab kev nyab xeeb, nws raug nquahu kom tsis tu ncua tshuaj xyuas cov yas mannequins thiab hloov lawv thaum tsim nyog. Yog tias cov mannequins pib pom cov cim ntawm kev tawg, fading, lossis lwm yam kev puas tsuaj, nws raug nquahu kom xav txog kev hloov.