Our sponges contain water, antifreeze and water remover. It can reduce the accumulation of dust and dirt on the glass and keep the glass clean and smooth. Its use is very simple: 1. Clean the dust or debris on the surface of the glass. 2. Open the lid, wipe the glass surface with a sponge, and gently wipe it. 3. Wait 5-10 minutes and rinse with water. The protective layer has the advantages of corrosion resistance, wear resistance, surface self-cleaning, hydrophobicity enhancement, etc., to provide protection for glass. Helps protect the surface of the car from wear and tear caused by cold weather, and also helps reduce friction from foreign objects.