Use natural activated carbon, ion exchange resin, PP meltblown fiber. Multi layers of filtration to make the water weak in alkaline. Can effectively filter the water of fluoride, chlorine, lead, bacteria, dirt, harmful metals and other substances in the water. Remove the odor, to provide clean and healthy drinking water. The filter on the cap can be easily inserted and removed. The shell is made of premium ABS plastic, durable for long time. Good performance give you healthier life. An essential filter for your kettle. Material: ABS Size: 10*7.8*5.1cm Color: white Package included: 6* Activated carbon filter Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.