Quality material: Made of high-quality cork with a sticky backing, sturdy and not easy to break, convenient for daily use, featuring delicate lines and a suitable size. Coaster design: The cork coaster has an anti-slip surface and strong adhesion on the back, with a natural wood color and no pattern, providing effective heat insulation. Measurement: Each cork coaster measures approximately 9.6 x 9.6 cm (3.78 x 3.78 inches) in size and is nearly 1 mm (0.04 inches) thick, offering a practical size for placing cups or glasses. Wide range of usage: Suitable for use in offices, schools, and homes to help resist heat from hot items; can also serve as decorative accessories to add a vintage touch to your space. Package contents: 100 pieces of cork sheets, providing a large quantity for extended daily use.