About this item:Efficient Cleaning: Solid glass water effervescent tablet is an ultra-concentrated liquid cleaner that can quickly dissolve dirt and stains and effectively clean the car glass outword.Anti-freeze and anti-fog: Suitable for winter use, it has anti-freeze function, which can prevent the wiper water from freezing in low temperature environments. It can also effectively prevent the wiper from fogging and improve driving safety.Universal for all seasons: Not only suitable for winter use, but also suitable for other seasons, it can be used all year round, convenient and practical.Easy to carry: Solid effervescent tablets are easy to carry and store, avoiding liquid spills and making them easy to use outdoors or during travel.Environmentally friendly and safe: This cleaner does not contain harmful substances, does not damage materials such as glass and rubber, and is safe to use.Package:10pcs/30pcs/50pcs