You receive 24 pieces of MDF cork-backed coasters, measuring approximately 3.93 x 3.93 x 0.15 inches (10 x 10 x 0.4 cm), providing ample quantity for daily use and replacements. These square coasters are made of high-quality medium-density fiberboard (MDF) with a non-slip cork backing. MDF is durable, resistant to warping, impact-resistant, thermally insulating, and water-resistant. The sublimation surface offers excellent print clarity and vibrant image reproduction. Made from eco-friendly, odorless materials, they are safe for everyday use. These sublimation-ready coasters allow you to personalize them with your favorite photos. With basic sublimation techniques, you can create unique handmade décor items that enhance any home space. To use: Remove the protective film from the blank coaster, apply your printed design using heat-resistant tape, place in a heat press at 355–375°F (180–190°C) for 60–80 seconds, then carefully remove the tape and transfer paper using heat-resistant gloves. Ideal for protecting surfaces from hot or cold drinkware—including mugs, coffee cups, wine glasses, and glasses—these coasters are suitable for kitchens, living rooms, bedrooms, offices, restaurants, and more. They also make thoughtful personalized gifts for weddings, anniversaries, graduations, birthdays, and other special occasions. Note: The first image is a display rendering; the actual product arrives blank. Color: As shown Material: MDF Size: 10 x 10 cm Package Contents: 1 set of sublimation coaster blanks This package includes only the items listed above.