Geworzi's Bathroom Basins is made with premium ceramic refractory clay. High-temperature firing (1380°F) gives it exceptional stain resistance. Ceramic material could decades of colorfastness and non-yellowing, maintaining your favorite bright white appearance. Special material of ceramic. Non-porous surface resists stains and prevents dirt buildup. The smooth surface requires only a light daily wipe to keep it looking new, effortlessly.