【MATERIAL】 Non-woven PVA + zeolite + calcium sulfite + natural coconut shell activated carbon + non-woven PVA, five layers of water filtration, absolutely safe, no secondary pollution, non-toxic. 【ERGONOMIC DESIGN】Convenient compact, suitable for 1.6-2.7cm diameter faucet, with a fixing ring, water will not fall or leak. 【SPLATTER-PROOF AND WATER-SAVING】Uniform filter hole size, you don’t have to worry about splashing, it has the functions of filtering, splash-proof and water-saving . 【IMPROVE WATER QUALITY】Removes heavy metals from chlorine and other impurities in water, improves water quality, makes it softer and safer.