Cov pa roj hmab yas siv roj ntsha feem ntau yog siv sijhawm ib zaug xwb. Yog li no, qee tus neeg yuav khoom tuaj yeem xaj cov tshuaj lom neeg siv roj thaum ua kom tau raws li qhov xav tau ntim thiab ib qho qauv ntawm cov khoom lag luam. Kev ntim khoom rau cov lag luam tshuaj yas thoob cov lag luam yog 25kg, 25 litre tshuaj lom neeg. Raws li cov kev xav sib txawv ntawm cov neeg siv, qhov hnyav ntawm cov khoom lag luam raug tswj hwm yog 1.3 kg - 1.5 kg. 1.3 kg ntawm yas thoob yog feem ntau pov tseg tshuaj lom neeg siv khoom, 1.5 kg yog lub tog raj mis hloov khoom. Yog tias nyob rau hauv tus txheej txheem ntawm kev siv, them sai sai rau cov khoom lag luam lub teeb thiab yooj yim tuav, 1.3 kg ntawm cov thoob yas siv tau yam tsis muaj teeb meem, kev pab cuam lub neej zoo li 1 xyoo, kev pab cuam lub neej ntawm 1.5 kg yog 1.5 xyoo.
