Material: Made of solid wood with good toughness and strong pressure resistance, this product is durable, resistant to cracking, and designed for a long service life. The surface is evenly sanded, showcasing the natural wood grain and enhancing overall quality. Provides excellent floor protection by dispersing pressure and preventing scratches. Each cup is approximately 2 cm (0.8 inches) thick. BEST STABILITY Features a non-slip EVA mat on the bottom that securely holds the piano in place and prevents sliding. The underside of the coasters is lined with a felt layer to protect floors, reduce noise, and provide non-slip performance. NON-SLIP PERFORMANCE EVA pads help reduce shock and prevent floor vibrations, minimizing disturbance to neighbors. The thick sponge base increases the contact area, effectively preventing slippage, absorbing vibrations, and providing shock absorption while protecting your floor. PIANO PROTECTION Helps reduce stress on internal components, extends the pianos lifespan, and provides a barrier against moisture by eliminating direct contact between the piano and the floor. Offers reliable protection at an affordable price. NATURAL WOOD GRAIN Each coaster features a unique grain pattern due to the use of real wood. If you have any questions about this product, please . We are committed to helping resolve any issues.