Lub hauv caug pob tuaj ntau qhov ntau thiab tsawg; Piv txwv li, tactical qauv tuaj yeem ntsuas txog 205 mm × 130 mm × 75 mm. Nyob rau hauv cov nqe lus ntawm lub peev xwm, packs nyob rau hauv 3 litres yog cais raws li me me, cov nruab nrab ntawm 3 thiab 10 litres, thiab cov tshaj 10 litres loj. Lawv feem ntau yog hnyav; ultra- qauv teeb tuaj yeem hnyav li 83 grams, thaum cov qauv qauv feem ntau hover ib ncig ntawm 150 grams-piv txwv li, hnyav 155 grams thaum lub xub pwg pluaj raug tshem tawm.
Cov hnab ntim hauv lub duav feem ntau siv cov khoom sib xyaw ua ke kom sib npaug ntawm cov yam ntxwv xws li lub teeb pom kev zoo, ua kom tsis zoo, ua tsis taus pa, lossis dej tsis kam. Cov ntaub ntawv no muaj xws li nylon, polyester, neoprene, elastic Lycra spandex, thiab ya raws -wicking mesh ua ke nrog siab - stretch fabrics. Cov qauv tsim qauv tuaj yeem suav nrog ntau lub hnab ntim ywj pheej, Velcro panels (lossis MOLLE webbing), cov dej hauv lub raj mis, cov hnab ntim dej tsis muaj dej, cov strips reflective, thiab lub xub pwg pluaj detachable.
Lub duav pob ntseg muaj ntau yam ntawm lub duav ncig sib xws; adjustable ranges feem ntau ncua ntawm 56-117 cm los yog 65-140 cm. Xwb, lawv tuaj yeem raug xaiv raws li qhov tsim nyog rau lub duav loj dua 120 cm (los yog qis dua 85 cm rau qhov loj me) kom haum rau cov neeg siv ntau hom lub cev. Raws li qhov xav tau siv qhov xwm txheej, dej tsis kam tuaj yeem muab faib ua " nag- pov thawj" thiab "submersible" (lossis airtight) qib. Cov qauv kev tiv thaiv dej feem ntau hais txog IPX qhov ntsuas - piv txwv li, kev dhia dej - qib pob yuav raug ntsuas IPX8, thaum ib qho haum rau snorkeling lossis ua luam dej yuav raug ntsuas IPX7. Tsis tas li ntawd, qee lub pob hauv duav muaj cov haujlwm ntxiv- xws li lub mloog pob ntseg chaw nres nkoj lossis kov - qhov rais pob tshab rhiab heev - txhawm rau txhim kho cov neeg siv kom yooj yim dua.