... Layer GAC + Antibacterial ballDeeply adsorb color, smell, chlorine, bacteria, heavy metals, halohydrocarbon and other harmful micro-organisms, improve ... the taste.3rd Layer UF membraneRemove harmful micro-organisms, bacteria and keep the water with necessary microelements. Features 1 ... bag for emergency adsorb color, smell, chlorine, bacteria, heavy metals, halohydrocarbon, outdoor water filter bag