... certificate 4.cheap and fine Foldable drinking water in plastic bagFoldable water bag is a bag with the ... is aimed at stopping using bottled mineral water, advocating more portable water bag to let more people become more ... in backpacks or waist,when drink up the water,people can fold it and put it in ... or as request4.Capacity:480ml,500ml,600ml,750ml,1L or as request5.Material:PP,CPP,HDPE,LDPE,LLDPE ...