Unmatched Stability with Non-Slip Rubber Backing: Say goodbye to slipping mats! The BestCool Mahjong Mat features a high-quality, non-slip rubber backing that grips firmly to any table surface. No more adjusting or repositioning during the game the mat stays perfectly in place, allowing you to fully focus on your strategy. Health-Conscious Materials for Peace of Mind: The BestCool Mahjong Mat is crafted from premium, non-toxic, odor-free rubber that is free of harmful substances such as PAHs (Polycyclic Aromatic Hydrocarbons). You can rest easy knowing that no recycled materials or harmful chemicals have been used in its production, making it a safe choice for you and your loved ones. Effortless Maintenance & Cleaning: Keeping your BestCool Mahjong Mat clean is simple and hassle-free! While it's not machine washable, you can easily rinse it with water or use a mild cleaning agent for stubborn stains. After cleaning, simply air dry the mat in a cool, shaded area avoiding direct sunlight to preserve its quality.