Material: Made of solid wood with good toughness and strong pressure resistance, this product is durable, crack-resistant, and designed for a long service life. The surface is evenly sanded, showcasing the natural wood grain to highlight quality. Provides floor protection by dispersing pressure and preventing scratches. Each cup has a thickness of approximately 2 cm / 0.8 inches. BEST STABILITY – Features a non-slip EVA mat on the bottom that securely holds the piano in place and prevents sliding. The underside is lined with a felt layer to protect floors, provide sound insulation, and enhance non-slip performance. NON-SLIP PERFORMANCE – EVA pads help reduce shock and prevent floor vibrations, minimizing disturbances to neighbors. The thick sponge base increases the contact area, effectively preventing slippage, absorbing vibrations, and providing shockproof protection while safeguarding the floor. PIANO PROTECTION – Helps reduce stress on internal components, extends the instrument's lifespan, and provides a barrier against moisture. Prevents direct contact between the piano and the floor for optimal protection. Offers reliable piano protection with attention to detail. NATURAL WOOD GRAIN – Each coaster features a unique wood grain pattern due to the use of real wood, making every piece slightly different.