Raws li qhov ntim ntawm cov hnab ev khoom, cov hnab ev khoom feem ntau tuaj yeem muab faib ua peb pawg: loj, nruab nrab thiab me.

Cov hnab ev khoom loj uas muaj qhov ntim ntau dua 50 litres yog qhov tsim nyog rau kev mus ncig nruab nrab thiab ntev thiab kev mus ncig ua haujlwm ntau dua. Piv txwv li, thaum koj mus rau thaj chaw zoo li Tibet rau kev mus ncig deb lossis kev nce roob, koj yuav tsum xaiv lub hnab ev khoom loj uas muaj qhov ntim ntau dua 50 litres. Qee qhov kev mus ncig luv luv thiab nruab nrab kuj xav tau lub hnab ev khoom loj yog tias koj xav tau mus pw hav zoov, vim tias tsuas yog nws tuaj yeem tuav cov tsev pheeb suab, hnab pw thiab cov ntaub pua chaw pw uas koj xav tau rau kev pw hav zoov. Cov hnab ev khoom loj tuaj yeem muab faib ua cov hnab nce roob thiab cov hnab ev khoom mus ncig ntev raws li kev siv sib txawv.

Lub hnab nce roob feem ntau ntev thiab nyias, kom hla dhau qhov chaw nqaim. Lub cev hnab muab faib ua cov txheej sab saud thiab sab hauv qab, sib cais los ntawm ib txheej zipper hauv nruab nrab, yog li nws yooj yim heev rau kev nqa thiab tso cov khoom. Sab thiab sab saum toj ntawm lub hnab ev ntawv tuaj yeem khi nrog cov tsev pheeb suab thiab cov lev, uas yuav luag ua rau lub hnab ev ntawv ntim ntau dua. Kuj tseem muaj ib rab hneev dej khov teeb tsa sab nraum lub hnab ev ntawv, uas tuaj yeem siv rau kev khi rab hneev dej khov thiab cov ncej daus. Qhov tsim nyog hais tshaj plaws yog cov qauv nraub qaum ntawm cov hnab ev ntawv no. Muaj lub thav duab sab hauv aluminium alloy sib dua los txhawb lub cev hnab. Cov duab ntawm nraub qaum yog tsim raws li lub hauv paus ntsiab lus ntawm ergonomics. "S" tsim, thiab muaj cov hlua khi hauv siab kom tiv thaiv cov hlua khi kom tsis txhob txav mus rau ob sab, yog li tus neeg nqa hnab ev ntawv xis nyob heev. Thiab tag nrho cov hnab ev ntawv no muaj txoj siv sia ruaj khov, dav thiab xis nyob, thiab qhov siab ntawm cov hlua khi tuaj yeem hloov kho. Tus neeg siv tuaj yeem kho txoj hlua khi kom yooj yim rau qhov siab uas haum rau nws raws li nws lub cev. Feem ntau hais lus, hauv qab ntawm lub hnab ev ntawv nyob saum lub duav, yog li ntau dua ib nrab ntawm qhov hnyav ntawm lub hnab ev ntawv tuaj yeem hloov mus rau lub duav, yog li txo qhov hnyav ntawm lub xub pwg nyom thiab txo qhov kev puas tsuaj ntawm lub xub pwg nyom los ntawm kev thauj khoom mus sij hawm ntev.

Lub cev ntawm cov hnab ev khoom mus ncig ua si ntev zoo ib yam li cov hnab nqa roob, tsuas yog tias lub cev dav dua thiab muaj ntau lub hnab sab kom xaiv thiab tso cov khoom tsis tsim nyog. Lub ntsej muag pem hauv ntej ntawm cov hnab ev khoom mus ncig ua si ntev feem ntau tuaj yeem qhib tag nrho, ua rau nws yooj yim heev rau kev nqa thiab tso cov khoom.
Feem ntau, cov hnab ev khoom nruab nrab muaj peev xwm ntim tau li ntawm 30 txog 50 litres. Cov hnab ev khoom no siv tau dav dua. Rau 2-4 hnub ntawm kev mus ncig ua si, kev mus ncig ntawm cov nroog thiab qee qhov kev mus ncig ua si ntev uas tsis yog kev pw hav zoov, cov hnab ev khoom nruab nrab zoo meej. Nws tuaj yeem haum koj cov khaub ncaws nqa thiab qee yam khoom siv txhua hnub. Cov qauv thiab hom hnab ev khoom nruab nrab muaj ntau yam sib txawv. Qee lub hnab ev khoom tau ntxiv qee lub hnab tshos sab, uas zoo dua rau kev ntim khoom. Cov qauv nraub qaum ntawm cov pob no zoo ib yam li cov pob loj dua.
Cov hnab ev me me no muaj peev xwm ntim tau tsawg dua 30 litres. Cov hnab ev no feem ntau siv hauv nroog, thiab lawv kuj tsim nyog rau 1-2 hnub mus ncig ua si.