Features: 1. **Durable PET Material**: Made from high-quality PET, our Nano Coat One Way Mirror Sponge is designed to withstand strong impacts, significantly reducing the risk of breakage compared to ordinary mirrors. 2. **Easy to Use**: Simply clean the glass surface, apply the sponge, wait 5-10 minutes, and wipe clean with a dry cloth. Achieve a one-way mirror effect effortlessly! 3. **One-Way Mirror Effect**: After application, the indoor view becomes obscured from the outside, providing privacy without sacrificing light. 4. **Versatile Application**: Perfect for use on car windows and home glass surfaces, making it an essential tool for both vehicle and household cleaning. 5. **Compact and Lightweight**: Weighing only 29g, this sponge is easy to store and carry, making it convenient for on-the-go cleaning. Our Nano Coat One Way Mirror Sponge contain PET. It can better resist the strongest shocks than ordinary mirrors, significantly reducing the risk of breakage or damage. Its use method is very simple: clean the dust or debris on the surface of the glass, open the lid, wipe the sponge on the surface of the glass, gently wipe, wait 5-10 minutes and then wipe it clean with a dry cloth. After use, from the outside of the glass, the indoor situation cannot be clearly seen, resulting in a one-way glass effect.