Puam kaus yog ib yam ntawm cov kaus loj loj siv rau hnub ci thiab tshuaj pleev thaiv hnub.Puam umbrellas feem ntau yog 6 mus rau 9 ko taw (2 mus rau 3 meters) dav thiab folded me me rau kev thauj mus los yooj yim hauv lub tsheb lossis lub hnab puam.Puam umbrellas yuav tsum raug suav hais tias yog qhov tsim nyog los siv txhua lub sijhawm sab nraum zoov kom tsis txhob muaj kev txom nyem thiab ua rau muaj kev phom sij rau hnub ci.